You can do both or just the daily posts, whatever you want, it’s just for fun.

If you’re happy with one card a day, you do you.
There was originally only one quest with both posts and threads but it was changed this way bc ppl were having trouble with thread ideas
You can get 2 cards per day by making the threads as well as posts for sure, and for some threads, it isn’t hard to do but if you’re fine with getting cards slower, it’s up to you since you can get cards without threads
you can still get the weekly rare by doing 1 quest a day too
if you wanna get 2 cards a day, you can continue but you don’t have to feel bad abt doing one if you’re fine with the slower pace of completing sets