It's also a good reason to always hold a bag of Bitcoin because Bitcoin can't make changes like this at all.
Not really true, Bitcoin can make changes like this. It only requires 51% of the mining power to accept the changes. Will they ever do it? Unlikely.
Also regarding @hive.fund how does beneficiary rewards that it receives work?
hm beneficiary is Hive (not HBD) so I assume this change means nothing
although I'm not sure exactly how the DHF converts Hive into HBD... so unclear
In theory that's what it means, yes, but the first Bitcoin hard fork in 2017 to BCH (and every other hard fork after that) showed that it's about what the market wants, not what miners want. The market votes on the price of the token that they prefer, and then miners go where it's more profitable for them.
It is because BCH did not have the support of the %51 of the miners. That is why it is BCH and not BTC. If they did, BCH would have been BTC, and BTC of today would have been something else.
You can have Bitcoin at 1 million dollar, and its profitability could stay as it is now. Because market price does not determine profitability solely by itself.