I'm not familiar with kiwi farms besides hearing the noise about them periodically and second hand accounts of them doing this or that, but I'll be candid here, how I feel about it really depends on what they mean by "weirdos." If they're just harassing trans people or whatever I can understand the outrage. If they're exposing child predators on discord (I've heard this said in this thread, don't know if it's true or not) I wouldn't say I'm unsympathetic.
This is what you have? A clearly very angry man with a default judgment against a single anonymous someone on the internet threatening to have him involuntarily committed for life in retaliation for what exactly? A family photo posted online of someone counts as child abuse? Note that the author of your link didn't link to the thread. So "on record" is a bit of a stretch to say the least.
I've got to admit, it is a bit unsavory if it is true, and I think the author is probably not making it up, but it's not quite as scary as it's being made out to be IMO, and I've still seen no actual proof of the accusation, whether I believe it or not is irrelevant.
What's happened here is that they (and you'll see this has happened across a lot of the extreme right in America) have started to label trans people as "pedo" or "groomers", in an effort to make it seem like trans people are really child predators, which makes many people more tolerant of their attacks and more sympathetic of anti-trans policies such as bathroom bills.
So, can you show me any instances where a trans person was accused of being a child molestor by kiwifarms when they were not, or any attack on a trans person that has occurred as a result of this? I don't think requesting such information is unreasonable, you're asking me to form a hateful opinion of a group of people, which I'm completely OK with doing if I actually see actions that give me good reason to hate them.
I searched the page for the words "kiwifarms", "kiwi farms" and "kiwi" and got no results. It appears your response has nothing to do with my question. I didn't ask if it were used by people against gay people, I asked if there were instances of kiwi farms calling a trans person a child molestor who was not one, and/or if a trans person had been harmed physically as a result of a false accusation by them of this kind.
Funny, because if I can then all the people levying accusations can, but refuse to.
I've googled it, and I can't seem to. I can find more accusations on google, but not any actual evidence of it. I'm not saying it's not true, I just want to see it. If you're asking me to hate a group of people because they're awful, you should at least be able to show me they're awful.