1. None of their products layer properly with anything else. It's like they create every product in a complete vacuum. You can wear their pants, but no kemono shirt on the entire market will work with it. You can wear one of their shirts/hoodie, but no bottom in the entire market won't clip with it. Even their own products won't work together.
2. All of their products clip with the kemono, in areas where you can't just alpha. ESPECIALLY the thumbs. I can understand this happening in their early stuff, or happening once as a mistake, but every sleeve they have ever made clips with the thumb, at a certain point you have to wonder why they just don't seem to care.
3. Their products fall prey to marshmallow syndrome, where everything is thicker and puffy then necessary to hide bad rigging, it's especially noticeable on their much older products, recently they've stopped making their shit 5x thicker then necessary, but they didn't really fix their bad rigging, so now it clips with every animation.
4. I have never gotten a Krankhaus product that I didn't need to retexture myself in some way.
5. Random baked shadows for no reason on clothing.
That's before you even start with the issues that arn't really her fault;
Over used on generic bad kemonos
Personal style is really cringy
In general I'd say that their clothing has a very general air of laziness about it, it's no mistake that their price point is bottom barrel and until recently they refused to supply demos.
There new stuff has improved drastically, but it's kind of too late, they've cemented their store as the one stop shopping destination for the worst of the worst kemonos.
Let me finish by saying none of this is meant to be mean, The reason people were drawn to their shit enough for it to become a meme is because their quality is much better at a much better price point then half of the shit on the market for kemono. They have carved out a perfect niche for themselves in the market, and their products definitely arn't bad or on the lower end of the kemono spectrum.