I was given a 7″ Fire HD as a present, the one with adverts.
It runs Amazon Silk os. NIGHTMARE!
Lots of things I got used to on Android do not work. Certain YouTube videos cannot be played, HTML5 spring to mind.
Adblock doesn’t work. There are more that I don’t recall atm.
Rooting apparently solves this but is beyond my capabilities and interest, I’m just going to buy a Chromebook for web browsing.
It is very well made though, it’ll make quite a dent when it hits the bottom of the wheelie bin.
Edit; it could be a coincidence but after trying to deny it ramming Amazon-everything down my throat I recently noticed that three months of Amazon Prime had been taken from my bank account, without my permission!
From day-one I had the in-app purchases set to OFF.
Never again.