To anyone who wants to do a test - easily reversed in mere seconds - try blocking the Lemmy.ml instance, then visiting this exact OP and see if the comment section looks any different as a result. Heck, open it up in a second browser window (no need to log in even) showing the before and after, and as a challenge, try to count the number of differences.
I will give them a hint: it is zero. Users thus "blocked" in that manner can still post, reply, vote (brigade), and even send you DMs, which trigger notifications, which btw can last for WEEKS and WEEKS without ever stopping. Their own admins refuse to do anything about it, thus the situation will continue, unless counteracted by an equal opposing force.
Blocking an entire instance at once is literally impossible using standard Lemmy software (without getting into higher level complexities such as custom uBlock Origin filter settings), despite how it seems to be the #1 thing that people on Lemmy.ml tell others to do, it is impossible to actually enact.
PieFed can do it though. Which only helps so much since many people on lemmy.ml have alts on other instances, which I've seen many people proudly announce that it was done specifically to get around such blocks and recommending that others do likewise.
I would not trust the self-reported "suicide" rates of a communist nation. They notoriously skew data and facts "for the common good", so I would expect that people would be recorded as having died of so-called "other causes" much more often. Like a 80-year-old who shot themselves in the head with a gun might be reported as having died "of old age", which is likely at least partially true - their age being one of many factors in their decision to end their life prematurely, tying in as it would to their quality of life and hope for their remaining future, etc.
So any comparison of self-reported stats like this image is fraught with issues like that, apples to oranges as they say. I cannot for sure say the intention of either the poster or the creator, but at the very least this looks like misinformation, and I will add that there is a well-known pattern of disinformation that this graphic exactly matches, so a claim that it is part of a psyop cannot immediately be debunked.
This is why I no longer tell people irl that I visit the Threadiverse: every single one or them has checked out Lemmy.ml (which notably shows a LOCAL rather than GLOBAL feed to users without an account), and actively chided me about it. I cannot blame them actually.