I agree with the top post in the linked thread, in these situations I tend to assume incompetence rather than malice. Furthermore this type of censorship would

I agree with the top post in the linked thread, in these situations I tend to assume incompetence rather than malice. Furthermore this type of censorship would actually be the best way to boost mastodon if only thanks to the Streisand effect. I could imagine in particular that alternative social networks would often be advertised by people who specifically tend to post content not allowed on Facebook, which may cause a poorly calibrated filter to see the correlation and decide to mark "mastodon" as a blacklisted keyword.