Regarding the future of Bitcoin

This post was immediately removed from the Bitcoin subreddit which is somewhat ironic, but I'll post here anyway at the risk of being torn to pieces.

I'll preface by saying i consider my self somewhat of a Bitcoin maxi. I run a node and a small miner, but I am fairly new to Bitcoin so forgive me if I'm missing some of the technical information.

I am trying to learn as much as I can about Bitcoin Ideally from both sides and I keep hearing this argument that Bitcoin has been "captured" and that it is doomed to never grow to function as a currency, and that ultimately when the mining supply dries up there will be no transaction fees to support mining.

I'd like to believe that if Bitcoin were ever in a place that the block size needed an increase or any other new development in order to grow to meet demand, that most people would vote in favor of these changes.

Does anyone here truly believe that Bitcoin should never change or have a block size increase? Don't we all agree that Bitcoin should receive the necessary changes to grow with the world? I don't understand the need for BCH when Bitcoin always has the potential to grow to whatever block size or development change is necessary to make it function. Don't we all have a vested interested in seeing it succeed in the future? Am I missing something?

Sorry for the novel, but interested to hear everyone's thoughts.