Unlike Eth, a Bitcoin chain with 10% hash will be unusable, and unsustainable, for a long period of time.
When a 1mb block is mined on your 10% chain, every hour or two or three, for months on end, very few users will be able to move any coins.
The number of users split too not just the network, a forked chain with 10% hash power (but with say 10mb blocks) will be used by 0.0001% of bitcoin users, initially? So it wont be congested.
And by the time users catch on, the difficulty readjusts ,and it becomes a standalone chain. It immediately gets added to some lower profile exchanges, then by greed, the big ones add it too, it can become standalone pretty fast,and then we are fucked.
Stop ignoring the fatal threats that a hardfork brings to bitcoin, there is a serious issue with hardfork, it's not just gossip or trolling.