Thanks for the serious reply, I appreciate it! Now that you mention it, me having a fold must definitely be it. For some apps when I highlight text, the menu sometimes spans almost the whole screen. And again, thank you for the tips you provided for the software side. Unfortunately, I'm a hardware guy so diving into any of that seems impossible to me haha.

What I did find however, is a possible solution though. To originally remove the Amazon search button, I had to reinstall the app. This worked for a few hours, but at some point it came back on its own. Doing some more sleuthing, I realized that Samsung (maybe it's an android thing too though?) has a deep sleep function. Basically, you can deep sleep an app so it's essentially disabled until you open the app again. So even going into the system's app list in settings, it now lists Amazon as "disabled." So no running in the background and I suppose telling other apps it's installed so they can display that search button. I only just discovered this while posting, so while the button is removed now, it remains to be seen if it'll stay working.

This set up works for me since the app stays easily accessible in my app drawer, and as far as I can tell, still works perfectly fine upon launching. So I can still use it for my required use cases. Now if you need your apps to function in the background this may not be a solution. I wish there was just a simple setting is settings somewhere that addressed what and in what order appears in this menu. That would simplify a lot of things. Just another reminder of how we own nothing anymore.... In any case, thanks for the response. Hope this can help you too.

Doesn't mean they couldn't include an option for a user to pick a default, though.