It is clear he is recounting an urban legend.
Yup. And you have painted yourself in a corner where the only possible excuse for him to recount such is that he thinks the Breen suits can be penetrated and that witnesses have done so (to their detriment). Just go back a page or two.
From a quick recap, basically you have progressed from "The continuity error is easy to fix" through "Okay, so perhaps it fixes little but at least it doesn't outright contradict what Worf said" to "It does fix everything after all and Worf's dialogue is not just compatible but also sensible, with a few extra assumptions". Which IMHO is wasted effort, as no amount of fixing will help make the Breen mysterious when they clearly are not, and any "partial patch" would better be applied against those plot holes that suggest mystery against the general trend.