I’ve found 3 vaivoras by field farming elites and nothing from challenges/singularity, go figure.
That said, you’re missing the point that matador was just reworked to be centered toward bosses/large monsters. If anybody else’s performance should be as good, then you’re just saying that a matador build (and thus fencers, since it’s the only class that goes along it) should be average at best in what is supposed to be its strong point, while retaining all the weak points. Thus…making those classes kinda useless.
It would be different if they changed its design focus (like, making it focused on criticals…but they just reduced those capabilities instead), but right now “being better at bosses” is exactly what the class is supposed to do.
And unless they go at things randomly (not that i would be surprised) they knew they were also focusing the endgame toward bosses, so it was a deliberate choice, albeit one that does put them in a difficult position balance-wise. So, yeah, exactly the mess expected for them to do.
And given they spent years to change the class from being aggro-focused to boss-focused…don’t expect those changes any time soon, if they ever come.