TLDR: Tap and hold on a comment to collapse it.
I was missing the feature from RiF that let you hide and collapse comment chains. I only just figured out how to do this on the Connect Android app.
By pressing and holding on a comment you hide that comment and all replies to it letting you easily skip down to the next parent comment.
Pretty much every Lemmy app currently in production let’s you do this, tbh.
It’s invariably either by a single press or a long press on the parent comment.
I’m really glad this is a standard feature, it’s super useful!