Piefed still doesn't have mobile apps.
They still sit at 331 monthly active users. https://piefed.fediverse.observer/dailystats&days=7
Lemmy has 54781: https://lemmy.fediverse.observer/dailystats&days=7
Are you planning to switch your instance to Piefed?
It matters because this means that only 0.6% of the userbase (it's even less, as Mbin also have a few hundreds users, but whatever) can use that feature.
The 99.4% of the userbase is still going to experience what the other commenter has reported: https://feddit.org/comment/5567697 and that you choose to ignore
May I ask you why you're not using a micro blogging Fediverse platform, like Mastodon or Sharkey? On these, decentralization is maximal, as every person post on their own to the general feed.
Lemmy/Reddit format of communities/subreddits relies on people to collaborate at some point. The value of that format compared to microblogging is the crowd sourced curation (votes) and additional input (comments). Votes and comments require the posts to be created once, so that users can interact with it once.
There are plenty of examples recently, but let's take this one: https://feddit.nl/post/30955168 484 votes, 28 comments
People only comment once on a given topic, so crossposting on similar communities splinters the conversation
What are the differences between
Except that the first one is more active? I crosspost most of the content you post on the second to the first, you crosspost some of the content I post to the first to the second.