So Satoshi Bitcoin will split to Chinese Bitcoin and Donald Trump Bitcoin.
If only core developers were capable/motivated/competent to find a solution to increase block size so that people can continue using bitcoin without paying ridiculous fees and insane confirmation time.
Anyways, if there is a split then BTC will not survive as BU needs 70% miner support and if there is 70% support, even less than 50% of those miners can do a 51% attack on BTC, so BTC will need to change their POW as they are planning now, at that point BTC will no longer be BTC but just another altcoin, and a technically inferior coin to many other altcoins.
So why wait for everything to fall apart when the only option is to choose an altcoin and start using it.
We can use altcoins, no problem but bitcoin gained trust. Can you use altcoin for many service? No because mostly if anyone accepts crypto coins, first is bitcoin and sometimes there are altcoins. There are big bitcoin mining datacenteres like bitfury, bitmain and etc, this means there is huge amount of money invested in it. Yes, Nowdays we have some issues but it needs some time to be fixed. If altcoin is accepted for what you want, you can use it without any problem.