Not just me then. It was great and then suddenly it became completely unusable. Lineage OS got a few more years out of it. Technically it still works but even Lineage dropped it.

Sadly the Samsung Tab A 10.1 that came later also suffered a huge performance drop (like many seconds to open the keyboard) and there's no supported Lineage for it, so it'll probably just go in a drawer and be forgotten.

Another family member got an iPad mini around the time I got my Nexus, and that's still going.