Discoverability is a huge barrier to entry in the Fediverse, and they’re not helping.
It’s hard for me to judge them too harshly, though. Fediverse devs do things I disagree with all the time, and users too. Maybe, in a different world, something else could’ve taken Mastodon’s place… but its forks stick close, Pleroma has the charm of a brick, Misskey is too 日本, and Misskey forks got Messy, and—
…Oh. That’s it, isn’t it? Mastodon is the best that ActivityPub has to offer most microblogging fans.
I’m not sure what exactly you’re talking about.
This article—which I haven’t read—has a screenshot of mobile Google Chrome tab grouping. Hopefully this’ll help.