Because if all of the BTC miners had the loyalty that a bitcoiner cultist has,
then BCH would have suffered a chain death on day 1 of the split.
BCH didn't die because first of all there are malicious centralized entities with some amount of hashrate behind this altcoin and secondly because they also changed the difficulty and how it works to reduce it enough to let that tiny amount of hashrate keep the chain alive.then BCH would have suffered a chain death on day 1 of the split.
They also created incentive by letting miners find more than 1000 blocks per day (instead of the normal ~144) like an airdrop. There is no room for loyalty in business and also even some bitcoin investors when they see some shitcoin pumping (see profit) they go there temporarily to make quick profit.
you want PoW to continue,
That's your naive interpretation. The problem is that there is nothing better than bitcoin's PoW.