I like Mastodon better too, but non-technical users seem to find it too complicated/nerdy. Threads is easy to use but apparently suppresses posts containing political content and perhaps as a result of inheriting Instagram's userbase, has an issue with users accusing other users of posting engagement bait, which isn’t conducive to building and sustaining a community.

Mastodon and Threads have also been comparatively slow/reluctant to respond to community feedback. With Mastodon this is understandable because it’s open source and resources are limited, but with Threads that’s not a problem which suggests it’s intentional.