Lemmy and jerboa are extremely polished compared to a lot of the free software I've used, albeit a lot less complex. FreeCAD is one that comes to mind whose UI and interaction actively fights you just to do simple things

I'm using the browser from my laptop (phone screens are too small when the laptop's there) and lemmy is surprisingly good in all aspects. The only UI issue noticeable to me is that it doesn't remember my previous position in the feed when I press back, but that's also the case in many large platforms, lol.

It's not just that: it is made worse by the fact that, being "free", resources are limited. For example, Lemmy.world has been experiencing several hiccups and it's bloody slow at the moment. I get it, it runs on small servers. But the QoS is bad nevertheless; how can you expect the average Joe coming from Reddit to stay here?

And for some reason, mainstream media seems to discourage people from FOSS projects. Just look at the coverage on Lemmy.

"It's clearly not ready yet."

Why? We don't know. It's just not.

It's not only the break in routine but also the direction of the site. All your examples are productivity products while the fediverse is, in essence, social media. The thing with social media is that branding REALLY matters. There have been attempts to copy Instagram or Snapchat or Reddit but they have all failed to gain massive communities due to not being part of a known brand.

"I posted my pics on the gram"

"What's your snap?" etc....

Kbin, Lemmy, these are just instances of something called the Fediverse, try getting a layperson to understand that.

Social media generally has a rule known as the 90:9:1 rule. 90% of people are lurkers just doomscrolling or passing time, 9% are interacting with content and leaving comments and/or posting, and the final 1% is making the engaging content that sites like Reddit and YouTube are known for.

Right now, FOSS software is often populated by only 10% of that ratio, the power-users and people that interact every so often. Those lurkers, the 90%, migrating them will be hard if not impossible. Remember, they lurk, they will stay where the most engaging content is, and that is still currently Reddit.