Reddit was (and still is) seen as foreign/overseas social media. Other social media platforms are much more diverse than Reddit. Twitter, TikTok, and Insta for example. YouTube and Facebook too.
Most people here in Lemmy come from Reddit. Reddit is very popular in the Western world. It’s not popular outside of it.
In the context of the larger Fediverse, I think Misskey is an interesting case study. It’s created and designed by Japanese people. The docs are in Japanese. It’s sponsored by a Japanese company. Resources and support are also in Japanese. Therefore it has a strong Japanese userbase.
On the other hand, Lemmy is created and designed by Western people. The docs are in English. It’s sponsored by a Western company. Resources and support are in English. Therefore it has a strong Western userbase.
Also I should point out that other than Twitter, Instagram, etc. there are some platforms operated by non-Western companies. China has a lot of those like Bilibili, Weibo, Baidu, etc. Korea has Katalk and Line, etc etc. They aren’t popular outside of the region.
edit: I should probably clarify. It’s not like we don’t use Reddit. It’s just not as popular.
I should clarify that NLnet is probably not a commercial company like Skeb is. I know translation exists but all the Lemmy support chatrooms are in English.