SimpleX is VC funded by Bill Gates, Mark Zuck and others. Most users are using the default SimpleX servers. They are pro-censorship just read their blog.
Discussion
That funding doesn't sound right but ok
So, hypothetically, if that VC wanted to stop you from using any open source project, all they have to do is donate?
VC funding by anti-freedom anti-privacy bilionaires is a huge red flag in my book.