Yes, you are absolutely right. No, it does not invalidate what I am saying.

If we keep expecting underfunded and under-resourced parties to come up with software ready and with absolute feature-parity over what is being pushed by the companies that have time, money and marketing teams, we are never going to make a dent on mindshare of the general public.

If on the other hand are diligent in refusing for centralized alternatives while willing to learn and emulate what they do right, then we will at the very least be in a state of steady progress. Matrix and Synapse from two years ago where way worse than they are today. I am confident that in two years from now it will be even better and easier than it is today. Facebook/Google Meet/MS Teams/Skype from two years ago was centralized and closed, just as I expect them to be closed two years from now.

It doesn't change the fact that there is an alternative besides Signal that provides e2e. And it specially doesn't change the fact that it is almost trivial to self host Matrix and get to interoperate with other clients, while Signal does everything possible to avoid that and keep everyone under their control.