That's interesting. I guess it depends on what you call a community, but saying the discord server's strictly harmed the kig community is weird. As I see it, there're upsides and downsides.
On the upside, the server's done more for getting people into kig - that is, actually getting a decent mask and hada, being able to meet up and go to cons, etc. - than this thread ever has. This place was nice for getting away from the Wyu/Cici circlejerk, getting some links to porn, and getting honest opinions on shitty-looking kigs, but that's about all it ever did. Turns out it's just the nature of the hobby that people wanna find other people nearby so they can do kinky shit together irl, and an anonymous board's never gonna support that. Here, people can be real about their spiciest opinions without consequence, but no anon's ever really gonna connect with another anon to the point where they're willing to self-dox and meet up. That's why the server's got so many off-topic channels: kig by itself isn't a strong enough common interest to make people willing to connect with a stranger, but there's a lot of friendships that've been built there on shared interests in vidya, anime, non-kig crossdressing - or hell, even politics.
Meanwhile, the server being built on actual conversation means a lot of information ended up coming out. Tricks on wig care and strain removal for hada; sources for cheap/secondhand masks; how to make padding; how to buy the right breast forms. An anonymous board could theoretically put together FAQs, mask maker lists, wig and hada care guides, and padding tutorials, but this thread never did that, because it never had access to both the information and the people willing to put it all together. It's historically been for consuming, not creating, content.
And hey, that's fine. I'm guessing most of the people still posting here aren't that interested in getting into kig themselves, and just want a feed of pics to scroll through without having to figure out who to follow on twitter, or dig through shitloads of chatter on discord. Unfortunately, most of the people dedicated enough to collect and share pics also happen to be into kig enough that they want to get a mask themselves, in which case they might as well use the discord for all those resources and support. That means the only people left posting here are either discord users willing to share the knowledge they've picked up there, or people who don't have anything to offer. End result: dead thread.
On the other hand, the atmosphere's always gonna be different. Forced namefagging on discord means everyone's out to protect their own rep, so false niceness and politeness are pretty common (though not universal). Real-time chat means convos spawn everywhere, forcing you to scroll through tons of shit to get to content. Semi-private status means it's actually less visible and more cliquey than this thread was, is, and ever will be. Presence of an admin team WOULD make it more uncomfortable to post there than here, but since the janitors here delete stuff arbitrarily it's kind of a toss up on whether you like Big Brother to be loud and visible or opaque and incomprehensible.
tldr; the discord server's killed the thread because it's more useful to more of the actively-posting community than these threads ever were. That leaves the anons left here out to dry without content, but them's the breaks.