Who knows is exactly the problem. Hand waving this away for future generations to deal with is exactly the problem. If we can’t imagine how we’ll solve it, we should probably strive not to create the mess.
But we do know that plenty of other current human activities, primarily around extracting stuff from deep underground and pumping it into the atmosphere, are going to cause huge issues for even just our kid's generation, with no realistic technology likely to be developed quickly enough to solve it(*). If we hypothetically needed to use up the earth's remaining helium to fix that I'd support doing so. Running out of helium isn't expected to introduce a risk of making the planet largely uninhabitable, as far as I'm aware.
(*) I'm more or less convinced that such a miracle technology is the only hope we have of avoiding catastrophic change. I'm baffled why there's not massively more funding into researching potential geoengineering solutions, given the stakes. Even fossil fuel companies would benefit!
I’m really not sure what point you’re making. Where has anyone proposed a climate solution by using all of the world’s helium?
What we do use helium for today are things like MRI machines that are medically invaluable, and we do so wastefully potentially denying future generations this technology.
Even if we eventually find alternatives, it may be inferior or we may otherwise deny them technological advantages of similar importance that would be more accessible through access to helium.
The problem is that today Helium is cheap enough we’re happy to boil an MRI machine’s worth off into space for a child’s birthday party.
Climate change is simply another face of the same coin of indifference to the costs we confer on others.
Maybe someone will invent Helium fission power! I did say "hypothetical".
I don't think we disagree, I just consider other ecological challenges far more serious than running out of Helium.
