Solving a puzzle is always fun, but people always do that thing only if the bounty is acceptable and not to low for them to waste their time finding hints and etc. Also, I didn't see engagement into that tweet where the puzzle is posted, maybe people are too choosy to solve a puzzle since there are still unsolved with higher price.
The twitter account who posts the puzzle only has 17 followers and the account is just created Junes 2020.
It is fun to do this puzzle and you could also win prizes, I remember last time where you could win a 1.1 BTC if you solve a very hard puzzle (By Phemex):
https://bitcointalk.org/index.php?topic=5219581.0If the contest is legit that's great but if he's just doing it to get more followers on twitter it's a no for me.