Publicly stating it here so a) other people can see what this company has done and b) to create some accountability and ensure I act on it in a timely fashion.
I have had a @fastmail account for years, at least since 2019. I find it very useful. However, unless they cease their union-busting tactics immediately, I will no longer be using their service, and I recommend that nobody else does either. An "ethical" or "privacy-first" company that can't stomach a union is one you can't trust.