I don't know what you were expecting, /r9k/ has been complete shit for the past decade at least.
>Simp threads, e-girl worship threads
>Coomers spamming their weird fetishes
>Low effort, obvious bait threads
>Weird pedos posting lolis and writing like they're a quirky little anime girl
That's what r9k has been since like 2014 in the very least.
Yeah, the wojak/pepe memes and greentext stories getting reposted on reddit/twitter led to an influx of outsiders who ended up gentrifying the whole site. These days, pretty much anyone claiming to be an oldfag on there either thinks they're an "oldfag" because they started using the site in like 2015, or they're just lying in hopes of giving whatever they're saying credibility. The actual oldfags, as in the 80s born millennial, nerdy, social outcast otaku with an edgy sense of humor, the ones who built up the site in the mid 2000s, are LONG gone.