If I did some mudslinging please provide an example. You might review your last sentence and consider what is really happening.
Now regarding that crossover distortion thing, most solid state amps of traditional design are class AB. By 'most of them', more than 98% (assuming that we are leaving class D out of this...). That's a lot of amps going 'way back to the 1960s...
Out of all those, you mean to tell me or anyone else that they have crossover distortion that class A amps do not, yet to back up your assertion, you can't find even **one** example?? Stereophile alone by your words would have to be full of them!
Occam's Razor suggests a simpler explanation, that in fact crossover distortion isn't a thing- unless the AB amp is under-biased/malfunctioning.
You might consider picking up a class AB amp and putting it on the bench and testing it, and setting up its bias and DC Offset. Its patently obvious that's a thing you've not done.