While I agree with the message, that the people should leave all centralized Social Media services, the big mistake here is concentrating a massive user-base on one instance (.ml) of one specific service (Lemmy) instead of spreading the influx towards many smaller, but still solid instances and federated services (PieFed, Mastodon, MBin).
Even disregarding .ml’s reputation, if this post does reach a substantial user-base, the only thing happening then is .ml receiving a HoD and people losing faith in the Fediverse as a whole (e: spelling) due to this, sadly. :c
This is the only part I despise of forum culture like MDL or the likes.
If you have a solution, or even better: if you have written software or a guide for this, please just publish it online.