You are absolutely right. I must admit that I haven't thought this through. Without a form that allows us to input a reason, or being able to select one from a list, it would practically be useless. Even if they implemented one or the other there's no guarantee for it to achieve its effect.

I want to ignore a button. I don't want to see that button ever again! It disgusts me, pulsating with different colors, pegging me constantly to click it, over and over again. NO! Just no! Go away, filthy button!

Somebody just make a usescript that does this, to show once again the infinite incompetence of gag. No buttons, just an ignore list for game names. Maybe tags, depending if tags are even listed consistently here for all the games that should be listed under a tag.

I will not bother to even start with that. Leave that to somebody who still cares. Even the dark mode userstyle was a bit of a stretch for me.

Check Gog Games Data Grid View script, does exactly what you want.

I've mostly switched to gg.deals when it comes to browsing deals on any store, especially GOG, due to their significantly better filters. One can pick GOG under the DRM filter and even get other stores that sell some games which activate here (like Humble or Fanatical). And of course, you can ignore products.