Asus/Google did, the Nexus 7 would brick itself after a 2-4 years from failing/worn out eMMC flash.
My Nexus 5, which is sitting in a drawer nowadays, also becomes ever slower. Even my HP Veer, keeping the Nexus 5 company, isn’t getting any faster either—even though it never saw real use.
So yeah, basically all manufacturers “do it”. It’s not even about heavy use or anything.
I have an S8 and although I am a Dev, I am really a Luddite on my phone. I have some random apps, a Google account and things like WhatsApp and Telegram but otherwise not really anything of note.
However, I find things like the share photo button sometimes taking 5 seconds for the list of who to share with to come up. How? Sometimes I click an app and it sits there for as much as 10 seconds before something comes up, tbf, that might be the app but I fail to see how compiled apps can become slower and slower over time by this much.
I suspect the enemy at the gate is tracking/metrics type apps that are sending a constant stream of drissle to the internet to try and get "actionable data" for their Lords and Masters but just make everything appear crap. I also loathe the need to fiddle all the time. Google Authenticator, absolutely fine until they decide that we need to press something to reveal the code, now it's 2 clicks instead of 1 50% reduction in productivity! I think they have reverted it but honestly, leave things alone!