I don't know for sure, and now you don't either.
Audyssey multeq xt32 is super sophisticated and more than capable of detecting the exact sort of possible problems that were being pointed out. The prior versions of audyssey don't have near the resolution of xt32 and may well have not seen the same issue. The problem may well still be there even with the older receiver, however the older audyssey software may not see it.
TLS was trying to trouble shoot and possibly improve your speakers. I've seen him help people improve cross over design problems before. Even if there's not a phase issue, Polk speakers use poorly designed and implemented cross overs. Remember my setup has Polk speakers, I'm not hating here.
When audyssey mics are bad they either don't work at all, as in no mic detected, or they boost high freq through the roof. There was a problem with the included mics with some Onkyo receivers due to a misprinted model number. That problem was nothing like what
yours was.
The truth I was pointing out is that nobody here gains anything by helping people with their home theaters. No one here is going to tell you to do something dangerous, foolish, or just to waste your time. ( they have been known to live vicariously through others wallets though, encouraging new gear purchases

)
The only person that had anything to gain from listening to the advice given was you.
I remember TLS guy saying well there's your problem, you have a pig in a Polk. Stuck with me for some reason. Didn't take away from my enjoyment of my gear at all, instead it started my quest for better speakers with a firmer grip on what better actually is.