This whole idea of class struggle being the only struggle is so oversimplified it’s kinda silly.

There's nothing wrong with a simplified model if it gets you the results you're looking for. And for the vast majority of the working class thinking in simplistic terms such as capitalist vs. worker would improve their lives tremendously.

The more complex models might be useful for explaining how things change and evolve. But mainly complexity is introduced by capitalists (or capitalist simps) to sow discord among workers and keep us from organizing effectively.