I think its a good game that you play with friends. It has a lot of minecraft (get resources and build shit) mechanics, so it is better played with others. I dont think you must play it now. Even if a lot of playes stop playing long the line, you can still enjoy the game with friends.
And considering the treck record of the company (BOTW and Hollow Knight ripped off) I half expect the Palworld devs to either sell off the project or to run off with the money. Did I mention the company lead also runs a scam business (cryptocurrency)?