To be honest, the only CSAM I’ve encountered is having it mentioned during the Purge back when it happened. Nothing else. As far as I know Lemmy is quite well moderated.

Originally (more than a decennia ago) because it had better customizability, later because it was less memory hungry.

Same here, love the honeycomb layout and the double tap feature to “hide” less used, but still necessary apps (single tap goes to Waze, double tap opens Google Maps. Another tap gives me Youtube, double tap opens Youtube Kids to occasionally placate the 3yo)