I’d guess the simple answer may be that people don’t care/know, but for those that have ditched Facebook for whatever reason, yet still use Instagram, it’s a little surprising.
Is it partly a result of it being a more focused/limited form of social media that filters out some of the stuff people didn’t like from Facebook?
Working in the film, TV & commercial industry as production and camera crew it is impossible to not to have instagram to connect and network.
I did ditch Facebook years ago though and recently reddit for lemmy. I am interested in pixelfed in general, but it will not replace instagram at the moment for my work relations unfortunately.