Community over tools. Hopefully if the tools fail the communities will move to new tools.
Ultimately, a huge hacker culture built on proprietary tools might lead to more freedoms, both political and technical, than a tiny hacker community built on other tools. The size and political influence of a larger community matters.
Maybe. But I wonder how much of a healthy community collapses when you are forced to make a switch from, say, Discord to some alternative tool. Building and maintaining healthy communities requires tremendous amount of effort, especially when they are large. So you should weigh the benefits of a convenient tool to the amount of effort that may go to waste if that tool no longer fits the bill.
Maybe, but that would be part of "community over tools". If one tool results in a smaller but better community, then sure, it's worth it.
I suppose the real problem of using proprietary tools for a larger community is the marginalized people. Like, if Discord didn't allow people from a certain country. It's a tradeoff between having as large a community as possible and making sure you include everyone, even those with uncommon circumstances. That's a tradeoff that gets made in many situation I think.
Ultimately, a huge hacker culture built on proprietary tools might lead to more freedoms, both political and technical, than a tiny hacker community built on other tools. The size and political influence of a larger community matters.