Let's say you liked a game in general enough so that it was kind of worth it and you want to play it again later, you will still have to buy it, because it will be rotated out of GamePass (same as with other services of this type, including PSNow).
Anyway, no need to explain further why a subscription service it not worth it for a lot of gamers,
this game is free anyway, so I'm not sure how it ended up on GamePass... doesn't seem like such a great deal after all.
And the seasons aren't available on gamepass:
That seems like a lot of fail, I recall when GamePass was supposed to include all DLC/season passes.
Can you explain me again how you get all those free games that you pay a subscription fee for?
If you want free games Epic gives them all the time, there are real freeware games out there too, many pretty good ones... but if you pay for a service that offers you games that are free anyway you may want to reconsider the "value proposition".