Lemmy

... but actually one cannot describe Lemmy's pitch in one simple sentence, because its main difference is: Reddit but no Spez, fora but connected to each other (and we call this "federation"), and Mastodon but with better topic and content discovery. Any attempt to shorten this will be more or less inaccurate.

So, main Lemmy features, listed under the "Join an instance", "Apps", "Explore random instance", etc., IMHO should look like this:

No ads. No tracking. No meddling.

Posts and comments on your feed are determined only by your settings and users' votes. All moderation actions are public and viewable using a modlog. We do not block third-party apps. Lemmy is a free software and you can check it for yourself.

(we are practically saying Reddit without Spez)

No single overlord. No isolation

There are dozens of Lemmy websites and you can choose your experience with different vibes, topics, regions and moderation approaches. Yet every instance connects to other ones (forming the Fediverse) and allows you to seamlessly talk with each other, even outside of control of Lemmy creators!

(fora but not siloed. Discussion viewable regardless of where you are logged in)

Know the entire discussion on the topic

All the talk on Lemmy happens on communities. Subscribe to any of them and you will receive complete threads of conversation, regardless where you are signed in. A search, which actually works.* Decentralised, but not fragmented.

(Mastodon but actually not fragmented)

All three "features"/"upsides" of Lemmy are related to each other, somewhat like rock-paper-scissors. All form one pitch of a platform which combines the best features of Reddit, fora and Mastodon solving downsides of these at the same time. It would make sense to display these on the carousel.

*does the search on Lemmy work better than on e.g. Reddit? A "better search than on Mastodon" claim would be plausible, anyway