critique on UX shortcomings, and highlighting how different efforts could solve various problems Which are solvable by creating a customized SNS frontend.

Lemmy is a community first centric ActivityPub network, thus most frontend tailor UX for community engagement, and not SNS.

Similarly Peertube is for videos, thus the UX will tailor for videos centric experiences.

What you detailed was an SNS tailored UX, not a community or video one.