I also bought a Kobo E-Reader specifically to use Pocket with it. In short order I found an open-source alternative - Omnivore - and spent my time hacking away at my Kobo to get it to pull from there instead. https://github.com/Podginator/KoboOmnivoreConverter
I think Pocket was amazing. I think the idea worked amazingly for someone like me, who is an enjoyer of reading, but had a hard time finding a moment to sit down and do it.
I am upset that Pocket is going. I am upset that Omnivore shut down. I am upset that my Kobo will probably remove that integration and thus ruin my Self-Hosted Omnivore's integration with it.
I think it could have been a lot, lot more.