You see, the issue I take with the implication of that being a bad thing is that most CYOAs are inherantly "Self insert" scenarios. Generally, seeing builds, especially detailed builds and/or minor writefaggotry, is a positive response to a CYOA. Taking the time and effort to consider your options and accept immersion into the scenario is a good thing, yet when there is so much as a romantic cast to the scenario (thus touching on one of the core interests of the human animal) we revile it?
Like most descriptors of excess, Waifufaggotry is, IMO, only a problem when it gets into autistic screeching. We've all seen it, or you haven't been on /cyoag/ in the last couple weeks. Lately it's been the purityfags and the /pol/ "race is my one issue" set but it could be any tawdry distinction people draw between those with similar but not exactly aligned interests.
Waifus are not the problem, shitposting about Waifus is, and it's just one of many brands of shitposting that cycles through this place. There's nothing special about it compared to anti-waifu, memory death, immortality, adventure versus comfy, or whatever off-topic shit gets involved today.
Go ahead and shake your fist at the anons who make the thread a worse place, but I for one don't think that anyone who gives a CYOA self-contained and respectful time and effort is in that category.
Pic unrelated, I just felt like posting a CYOA rather than a rant and no CYOA.