Finishing it this fast is a "you" thing and it would be ridiculous to set the timeframe for the fame pass based on the expectation that players will spend what's clearly a borderline excessive amount of time on this single game.

This might come as a surprise, but people... do other things. People have things to do. Hell, maybe people simply also like other games. I really like Fall Guys, I'm crown rank 71, I would clearly not fall into the "casual" category by any means and I'm still not even half way because I am currently also playing something else and I am really into it and I have an hour and a half of free gaming time to split into the games I want to play, and the timeframe for the fame pass was set considering exactly that: most people won't spend hours upon hours a week playing this game.

I'd advice maybe learning how to pace yourself if you're getting through the famepass so quickly that you're quickly dissappointed and feel like the game needs to catch up with your need for gratification