Capitalism is the problem because it incentivizes these behaviors and allows "capital" (i.e. rich people) to control the political process. The people who are pushing the anti-trans agenda - just like the gay marriage scare of the past - are doing so to manipulate people into voting against their own interests to elect politicians who are loudly subservient to capital. It's not a coincidence that the same people, i.e. Republicans, have been pushing for trickle-down economics and privatizing social security for decades. Democrats aren't much better. In some part because Citizens United (a Republican gift to the rich) declared that money = speech, and so it's hard to compete electorally without caving in to the demands of capital. So, they do dumb shit like propose privatizing the water supply:

https://therealnews.com/biden-infrastructure-report-pushes-disastrous-water-privatization-schemes-watchdog-says

And this doesn't even get into the real nasty part of capitalism which is the plunder and exploitation of the global south that has gone on for centuries to build today's capitalist society.

If you have actions you plan to take that will get your elected representatives to stop doing things that makes the ultrawealthy richer and start doing things that improve the lives of everyone else (UBI, universal healthcare, equality for all) under the capitalist system we have, then go ahead and get on it. People pointing out the flaws in capitalism is not the reason you have thus far been unsuccessful. And when you call for everyone to stop criticizing capitalism, as if it is some universal equilibrium that is undeniably correct, you are carrying water for the very people you want to oppose.