There's no difference between an activation threshold of 75% (or 51%) and 95% because pro-fork miners can just start rejecting blocks from anti-fork miners to increase the percentage. Miner voting is a stupid concept for hardforks -- it's the economy that matters in a hardfork, not miners.
Pro-fork miners need to be over 50% of the power (or the sum) to start having an incentive to rejecting blocks of other miners, otherwise they will have a higher risk of getting orphaned.
Still, as the logic says (and as it was seen at hong kong event), miners are totally afraid of making decisions, because the value of their prize doesn't come from them, but from who accepts their coins.
They will never try to make a hard fork (a new type of Bitcoin token) if they aren't sure that the larger majority of the network (users, exchange, payment processor, etc ...) will accept them.