But for sure the people here which never had an hand on this great tonearme are bashing it because it not pays attention to "regulations and facts" and for them... the earth is still flat! ;-)
There are some people here who enjoy making grand proclamations and pronouncements. Many take a rather odd pride in this behavior, some peppering their remarks with comments such as, "I’m not polite," "I’m not politically correct" or my favorite: "I’m brutally honest" when what they really mean is, "I enjoy being brutal." They’ll often bolster their comments by claiming certain professional qualifications. Some have established YouTube channels they promote in hopes to monetize their "expertise." One of the logic-challenged ones you’re arguing with here claims to be a physician.
What these sorts have in common, as you note, is a lack of experience. Their hubris has convinced them that their intellect can overcome that deficiency and, to an extent, they are right: Knowledge and wisdom can help you avoid mistakes that otherwise would teach you the lessons of experience. But the truth they don’t want to acknowledge is v-e-r-y simple:
There is no substitute for experience.
That’s why I’ve avoided commenting on this arm. I understand as well as anyone here its unusual geometry and the measurable distortion that can result, but I won’t discount the reports of those who’ve actually seen and heard it. Without actually correlating expectations with actual results, the Viv’s critics have added nothing of value to this conversation. But their "contributions" make them feel very important, and that feeling is what they seek. It’s why they’re here.