To be honest, the liquidity for those miners comes from the
very few places where they can trade those rewards for
real BTC and at the end of the day some places will think
twice before continuing to accept those rewards and give
some Sats in return.

I guess many are looking for profit as you say and having
ASICs directed to that fork is not difficult but the risk is
having their ownders changing the code to block you from
confirming blocks if they feel like it.

Personally, I think it is all part of the whole game theory around
Bitcoin adoption.  It will be fully understood years from now,
it is still too early for most.