Probably "number of users who were active this month" for monthly, versus "number of users who were active the last half year (6 mo)" for halfyear. Both can be updated monthly. A user who was active 3 months ago would be in the second group but not the first.
That's bad socialized medicine. But sure, private medicine is objectively better than underfunded socialized medicine, if you belong to the minority of people who can afford it. Congrats!
Here, fixed it for you so the analogies to the apple example are not completely wrong:
"Cars should have more seatbelts!" "Yet you buy from brand X who refuses to provide belts and lobbies against belts, you could buy Y instead!"
"We should improve our society. (Said by a rich provileged person)" "Yet you don't push back against horrible practices, just talk a bit and otherwise enjoy your privilege."
No need to downgrade python, and no weird dance shoukd be needed. Use virtual environments! Conda is great if it's your first dabbbling with virtualenvs. What other things are blicking you?
Same! And I use syncthing to sync the db across devices, no manual intervention needed :)
Well, are you trying to look at your subscribed communities without being logged in? How would that work?
Yeah you need to go to the settings of a specific account, not the general settings!