I would say that, ultimately, optimization would seem like the best route. But on the other hand, SunSuriyaZ seems to be struggling with this for over 2 days now. And (from what I understand) despite already making efforts to slim their game down they aren’t making much progress in that regard. So I try to work with what I’m given.
On the other hand when they upload a “downsized version/demo” of a game that has already progressed significantly(?) beyond that point, it might strike some players who take the time to try the game as an empty promise when they hear something along the lines of “Guys, guys… I’m just waiting for itch to upgrade my storage and then the game will be so much better…”