There was a point when a very large portion of the Bitcoin forums/Bitcoin users in general supported Litecoin, because of what I stated before. They weren't in competition so no ill will was held. After the Alt Coin shitstorm where every coin in existance jumped in price following the Bitcoin take off, people realized it was profitable to pump, dump, and scam with coins meant to manipulate people and then fall into obscurity after their Bitcoins were parted from them. This yielded more Bitcoin purists and the community we see today.
There was a time when creating a crypto currency was a feat. Now there are generators that produce them for you, the thrill and support for alt coins is now mostly held by the dumpers.
in the past it all used to be about the miners, what the miners supported would win, but thats all changing its getting more and more about the market, even a non mineable coin can survive.
truth be told the future will be even further from the miner, even the core dev will tell you themselves that POW was only ever designed to be a short term solution.