Outside of gh discussions there is also https://forums.nanovms.com/. We made a decision a while ago to follow Zig's lead here and have no 'official' community space (https://github.com/ziglang/zig?tab=readme-ov-file#community) instead letting people form their own spaces.
I can understand why project maintainers don't want to carry the burden of gardening a space, but Zig is not doing itself any favors here. Instead, I would suggest maintainers to open a "vacancy" for an accessible and privacy friendly space, and if it fits the criteria, bless it. Or just start one yourself and hand it over.
Why? From a quick glance, most of the Zig communities are on discord. That means all folks that value privacy would not participate. And even if you are ok to lose out on that demographic, you still have a highly fractured information space. Although in the case of discord, "information space" is too generous. "Information black hole" is a more apt term, because none of it gets indexed by search engines. One cannot do without a bit of leadership to make a project successful.
... and props for your project!
How much privacy do you need to talk about a programming language?
Official Discords are great!