I think that 'Survivorship fallacy' is a pretty weak argument. As a counter-example, the wi-fi (particularly roaming) is a weak spot for FreeBSD, and a well-known one. If the issues were that easy to fix, the RTFM refrain would hold water.
There's kind of a reason why there's not that many threads about "ZFS not working right". Yeah, people who don't have issues with ZFS, don't post about it. True, BUT: they do help people who do have issues with ZFS, and issues actually get resolved, even with the RTFM refrain. This is in stark contrast to wifi or the dependency hell.
It can be pretty difficult to get a manufacturer to acknowledge a defect in the product.
WiFi or DRM-KMOD are problems that go beyond FreeBSD (or any BSD). It's simple: it takes hands to code everything needed for it to work properly. And I mean hands, not words, much less complaints, because that doesn't magically write code. That's leaving aside money, which is also lacking.
I'm affected by DRM-KMOD on FreeBSD 14. I have an RX 580, on which amdgpu, with DRM-515-KMOD and DRM-510-KMOD, behaves explosively, and this is documented (from 14 to 14.2). But my response to this isn't to point fingers at the FreeBSD devs, but rather to find a way to fix the problem. Whether it's filing a good bug report, testing a configuration or patch, or whatever, as long as I'm helping and doing something constructive and real.
I could (for example) get picky and end @jsg's (OpenBSD dev) email because the 6.12 DRM there doesn't work with my Intel Arc, and instead, I'm trying to fix the problem. Same with FreeBSD, where we have DRM-66-KMOD. That doesn't mean I'm attacking the devs.
And yes, RTFM is a common practice, because RTFM is how these things work and the risks. Furthermore, the license makes it clear that:
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.