We have bigger and more urgent and realistic fish to fry before worrying about heat death. Insofar as you care about the health and well-being of humanity as a whole, and the biosphere in which we are embedded, then you cannot let yourself zoom out so far in ethical concerns, or else you become effectively antisocial.

We have nested problems at the global, national, and local level that all need attention. But of course it is relatively easy to get to the bleeding edge of Spyro speed-running than it is to get to the bleeding edge of solving real-world problems that have faced humanity, in one form or another, for thousands of years.

Life is partly about the journey, but if a side effect of your life is to chew up the biosphere to make cool new toys and experiences for you, then yes, I think you're better off taking up Spyro. Even better, though, if you recognize a challenge that some larger group faces, and apply yourself to solving that, at least part time.