Haha yeah I know. Being a Lenovo device, it was good for only one OS update. So the OS itself isn't taxing the hardware, I guess. But probably updated apps are.
More than anything, I guess I'm just curious about what happens when a device starts its death throes. On the one hand, I'm not really a "power user" of electronics; on the other, I have been doing this long enough that I do things like close tabs, close apps, clear caches and clean up storage, and avoid the memory and resource hogs until I really need them, etc. so I can generally milk life out of devices beyond what a lot of people could tolerate.
As I said, it still works alright as a reader with the exceptions noted. And I only have one or two apps "outwardly" open or active usually, the reader and maybe chrome or something else and with wifi off it works reasonably well. Turn the wifi back on and it just crawls and glitches, at least until it reaches some steady state after 10-15 minutes.
One thing I do have a lot of on there that I rarely use is "media" apps, Netflix, Prime, Max etc. I just don't usually watch movies or videos on small-screen devices. I suppose those are bigger hogs even "inactive" than I might think.