40-ish M. Potentially, we’re/they’re more likely to have been using 3rd party apps and felt frustration with the Reddit decision in the first place. Younger users (and maybe older, 50-60+) maybe just started off with the official Reddit app or Reddit is a smaller part of their “content diet” vs other platforms, so they don’t really see what the big deal is.
If true, it’d be kind of an interesting demographic shift, since the last time we probably saw something like that was with Facebook when younger people moved away from it when it became boomer territory, so maybe the opposite is happening with Reddit, with middle/older more tech-savvy users jumping ship, but I’ve no real evidence.