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?
I’m no longer on FB but still use Instagram because their use cases and the type of content being shared are completely different, I don’t share anything there I don’t care about the discovery page or reels I’m only there for the few stories and posts that the people I’m following posts basically I’m using it for what it was built for in the 1st place it is great at it it no longer feels like I’m wasting my time on it and this is partially thanks to Aeroinsta blocking all the ads and trackers