Marco, again, the problem with your commentary is that it amounts to: "You're a tourist, I'm not, so I'm right and you're wrong." If you want to talk about other Neapolitan tailors and bring forth a meaningful comparison, why don't you present some objective, substantive information that others can judge for themselves?
Anyway, I think you are also seriously misconstruing what I've claimed about Rubinacci. I never said they were the only 'true' Neapolitan tailors--not even close. I never claimed they single-handedly invented a style, either. As your own account indicates, the development of tailoring in Naples has been multi-fronted and fluid. Thus, its inherently impossible to pinpoint any tailor that represents 'true' Neapolitan tailoring. The one thing I have said in Rubinacci's favor with respect to that issue is that they've been around for a long time, and continued with the same style. Insofar as Neapolitan tailoring is decades-old in the making and represented by many different tailors and styles, Rubinacci's consistency and longevity alone are fully indicative of the firm's claim to being truly Neapolitan. If you think not, I'd imagine you'd have objective reasons you could illucidate, rather than mere hearsay.