Hubble re-enters in 2037, and is useless because of orbital mechanics a few years before that.

I think it's unlikely the current reaction wheel system lasts to that ~2032 timeframe, let alone significantly beyond.

Of 6 wheels, 2 are working well, 1 is dodgy, and 3 have failed. 3 are required to keep orientation.

I thought they could now control it with only 2 reaction wheels [1]

[1] https://core.ac.uk/download/pdf/10543974.pdf

This proposal (by being part of Polaris) is implied to be manned as far as I can tell.

It's also proposed to be funded by Isaacman. Reading between the lines, he's probably planning to go to space personally and fix the Hubble. Which is kinda a vanity project at that point, but hey, I'll take it.

Both he and SpaceX seem committed to expanding the capabilities of private spaceflight and private astronauts. If they are into it, why not?