I actually don't think libertarians are embracing Bitcoin anymore. I think that libertarians used to embrace Bitcoin, but I think it has been corrupted, and most libertarians have seen that and moved on to Monero.

There is no team behind Monero that can just change the rules at will. It takes an effort of the community, just like it does in Bitcoin, in order to change the rules, so I highly doubt that it would occur.

Hard forks do happen in Monero, but that's only after extreme community consensus and discussion has occurred.

The reason for this is that the Monero community knows that software is an ever-evolving thing and sometimes needs maintenance that is not backwards compatible.

Anytime a hard fork does come, the community is notified well in advance. For example, there's going to be a hard fork in probably the next six months to one year, but we've known that it was going to occur for something like two or three years at this point.