Google Keep is the most amazing app for this. You can make a checklist and when you check stuff off it goes to the bottom. If you uncheck it it goes back up. Perfect for maintaining a shopping list. My wife and I used to use a shared note on there as our shopping list.
I just see thread titles, I don't really check the community. It meets OP's criteria. Also, not everyone is interested in the same level of privacy. I'm never going to go through the Herculean task of degoogling myself, too much stuff uses my Gmail. It's just not worth it. I only have so much time in the day to enjoy myself. Aggressively turning things off like personalized ads, sharing data, etc. is acceptable to me.
you might be right about it being a hassle but if someone is asking something like this inside a community about privacy it most certainly does not meet OPs critera :D