I would sand it, too much dust. Just give it a spray with water and scrape it

In this hypothetical situation, this would be like getting two new tires on your pickup, but when you go to pick it up they accidentally put two 29" bicycle tires on your rims instead of two 29" light truck tires. They don't see the problem and expect you to drive away like this. You'd be like yeah, hmm, I see how that could be confusing, they're both 29" tires after all. no big deal, you guys take care of this, OK? you guys are totally competent enough to put the proper tires on after we've had this issue and learned from this mistake. carry on.

this would be like your plumber accidentally substituting some 1 1/2" galvanized fence post for 1 1/2 galvanized iron pipe and not noticing the difference, your electrician substituting some shit like this as a ground wire because they're both wire coated in green plastic https://www.homedepot.com/p/Everbilt-5-32-in-x-50-ft-Vinyl-Coated-Wire-Clothesline-Green-65025/202957532 and you'd be all like, yeah, no problem, I trust you to finish the job properly.

does this hypothetical drywall/tile guy just dump all his materials into unlabeled home depot buckets and drive around not knowing which of his 7 buckets is 90 minute mud, which is easy sand, which is thinset, which is grout, which is fertilizer for the roses at this one customer, this one bucket of diatomaceous earth for his swimming pool gig, and this one is calcium chloride, for when its snowing...

in THIS house, we watch HOCKEY!

You already know what to do but I have a good? story. I got a job replacing floor tile in a large custom kitchen. Dishwasher had leaked and all the tile nearby came loose and was buckling up. After pulling up the loose tiles I found the issue was there was a bunch of overspray on the slab from when they shot the drywall texture on. The places they didn’t clean it off first turned back to mud when it got wet & the tiles came right off. Where they did clean the mud off first I had to chip the tile off with a demo hammer and it would chip the top of the slab before the thinset would release in those spots.

Yeah. They're surprisingly strong when they're grouted together and joined to other barely attached tiles.

Problem is when one goes its enough for all of them to go in a usually destructive ways (and often from someone bracing themselves against it, my great aunt broke her ankle from half of a tile wall falling on her).

No harm, no foul.

Isn’t that the saying?

Reminds me of the newlyweds that mistook vaseline for window putty.

If its ceramic tile you'll get away with it. Porcelain or natural tile needs flexible adheisive.

That's the thing about taking shortcuts. It actually works a lot of the time. But sometimes it doesn't work, and that's the people that are going to comment the most on these types of threads.

Not saying he shouldn't tear it down, especially since it hasn't fully set yet. But he would probably have been fine either way, especially since it's a backsplash, and doesn't get wet like a shower for example.

I did this about 5 years ago. Tiled an entire commercial bathroom and realized when I was done that I used pre-mixed drywall compound instead of mastic for the top half. Made an agreement with the owner to replace if the tiles moved or fell within ten years. Nothing has moved yet.

I should note that there’s no shower, so moisture probably isn’t a big factor.

pretty darn.

first time it gets humid the tiles coming off wether you want it to or not.

Very

Lol the fact that it came off easily goes to show you

Ok

Grout it in so water does get behind it might last for some time

By that logic, pudding is an adhesive. Paper drywall tape will adhere to anything wet.

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I did the same exact thing to the top half of a shower wall. The adhesive and the drywall came in very, very similar plastic buckets. "I don't remember the tile adhesive being this lightly colored..........oh for F's sake."
Take them down, rinse them off and do it right.

I agree. If this were done by a pro, there'd be no excuse.

Thinset and joint compound are different in every conceivable way... Texture, appearance, smell. I haven't tasted either, but I'd imagine they taste different too.

Speaking as an electrician that constantly has to un mud all his boxes... yeah the stuff just cracks right off. Give those tiles a month and half would probably fall off on thier own. Any flat-ish tool should be able to pop the tiles loose.

Get as much of the mud off possible. The thinset may not mix with with the mud very well.

Multitool is a great tile tool

You are screwed. You must tear out and replace.

very