I applaud your humility. It isn’t easy to 1) ask for help when your stuck and/or mess up and 2) taking advice when it counters your own experience.

You can get the compound off the tiles easily enough . Tear them out

Step back from that mess. You need a good framing carpenter to properly replace all that is missing. Don’t let your home insurer know.

If you want to DIY I would have a look this DECKO stuff. My friend installed it over some old concrete. Don't have a photo of his area but their website has some.

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Yeah especially for a backsplash. That's pretty light duty for tile.

I don't think people understand how difficult it is to mix up pre-mixed mortar or mastic for joint compound. The texture and smell is different for each one. A professional making that mistake is VERY concerning.

Pre-mixed mortar or mastic only share a color with joint compound. Aside from that they have all wildly different textures and smells. It is hard to mix them up if you've actually used them a few times.

I dunno but it'll be a great story whenever you're shitfaced.

I think it is beautiful. I would power wash it and hold on to it. The little ones will grow bigger feet and the stone will no longer be of concern. In my trade experience of over 30 years, that looks professionally installed. I would embrace it if you can.

It will last just fine as long as you want to redo your kitchen again in 4 months.

I did this once as well. I caught the mistake after I had done 4 sq ft. Pulled them off and did them with the tile adhesive.

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Don't put drywall mud in solution down the drain, that's asking for bigger problems.

I have repaired crappy tile jobs that literally was held together by grout. One in particular I remember was 4x4 tile. The tile was not stuck to the wall. The whole wall of tile flexed slightly independent of the wall the grout held it together. Easiest tear out ever.

Get the right tools and it won’t be so bad

Short answer: yes.

In pick up basketball, no blood no foul.

Cry on your own time, we got a game to play.

Have you redo that one buddy

Agreed. I feel it helps that it is a back splash

This looks like some idiot removed structure to get clearance for ductwork and when he realized that things were about to fall on his punkin' haid rigged something to keep it from happening long enough for him to get paid and skip town. You really need to get somebody who knows what they're doing to eyeball the situation and tell youu what needs to be done in the way of a permanent fix.

I did the exact opposite. Used mortar as joint compound. No suggestions, just know you’re not alone

Haha last month I covered my radiant floor mat with drywall compound. Had to scrape it all off, toss it in the yard and spray it with the hose. Had to scrape the rest of the floor and toss it. Fucking disaster.

MOUTH OF A TEAMSTER!

There’s a video of this happening to a tile floor somewhere. It’s crazy they pop up like BAM