I'm getting more and more to the point where if someone is a cis man and his Mastodon profile is just a long list of FOSS they use, I'm blocking them, because they generally turn out to be nobheads in the end - easier to just give them the boot now rather than in a few weeks
Other warning signs: running their own instance rather than being on an actual instance with other humans; lack of CW use (and getting mardy if you point it out); being someone who replies and argues with you if you post anything faintly techie related
@ak Yeah, my experience of those kinds of profiles has been lots of sealioning and 'well actually'.

@welshpixie Did you see the actual sealion that sealioned someone last week

He was slagging off sealions on the TV and a sealion came and started having a go at him

https://www.bbc.co.uk/news/av/world-latin-america-57604881

Very Well. We Shall Resume In An Hour.

Sea lion crashes interview about 'plague of sea lions'

A sea lion was caught on camera crashing an interview with a fisherman about a "plague of sea lions".

BBC News