It's a feature, not an issue, and it's been this way since Heyuri has had any amount of users at all (even long b4 teh pr0n boards were officially merged with Off-Topic)

And unlike many other places today (such as 4chan's /b/), you'll find that it's typically not trashy low-quality social media pics, iphone selfies, onlyfans material, propaganda-like material, etc. being posted to Heyuri, but instead primarily 2D pics (often vintage), Japanese gravure, LOL-worthy GIFs/WebMs, etc.

One of Heyuri's founding principles was to be an English-language Futaba Channel, and to take inspiration from Japanese imageboards in general. Do you know what Futaba is filled with, and what Japanese imageboards as a whole are primarily used for since they began in the late 90s? PORN!!! (and other erotic materials)

Another major inspiration of Heyuri's foundation is early 4chan, which contained so much porn since the very beginning that it was considered by many to be a porn site first and foremost

This is more of a tangent, but honestly, the whole "anti-porn" movement on Western imageboards (and to a lesser extent, the wider web) has only taken hold since /pol/, nofap, "sex-negative feminism", etc. movements have grown. To me it reeks of 2015+ gheyness, and I don't want Heyuri to be bogged down by all that lame "purity spiral" crap infesting the net these days

So if u haet pr0nz, ur probably in the wrong place - maybe try wapchan.org or kind.moe instead. Otherwise, take it easy and enjoy teh hawtness