On the one hand, I'm all for other people having stupid ideas that interfere with their own lives. Since I know that these ideas are substantially false*, and I'm not inclined towards giving other people's
opinions "rent-free space" in my own head, I largely ignore this sort of stupidity these days.
On the other hand, I'm not a fan of the disservice these types of opinions do to people in general. In the young, it sets them up for "failure"**, and also DOES diminish and disrespect the work the people put into what they do. That's maybe, just, "like their opinion, man", but, it's part of a whole range of "lack of empathy / social cohesiveness" issues that are helping push our species towards its "brink" far more quickly than 'strictly necessary'.
* There are many papers on studies, including "twin studies", examining genetic vs environmental influences on performance, expertise, etc. There is an undeniable genetic component - the simplest examples are typically in the realm of athletics. There is no environment that turns me into a viable NBA player***. However, just as people are incredibly "innumerate" and just plain bad at "statistics" elsewhere, absurd numbers of people apparently believe that there is some "talent jar" (most, even worse, viewing it in terms of "born with / without" vs. an at least more sensible "set up within the first 3 - 5 years of life, substantially") and either someone was given a certain "talent" from the jar, or they weren't.
As a certain "muppet"**** once said: https://youtu.be/VmXSfFY0CO0?t=4m36s
** In the sense of "not reaching THEIR full potential" - studies in psychology have clearly established that ideas like "talent", rather than "work invested" are 'caustic' - they can massively interfere with performance, learning potential, etc. Simply search for terms like 'talent', 'work', 'practice', 'belief', 'skill' etc. on PubMed or Google Scholar etc. (tight on time, else I'd add some refs right here)
*** Edit / important note: this concerns POTENTIAL, not realization of such a goal which obviously takes just as much hard work, generally, as reaching high levels in any other area.
**** Who apparently COULD join the NBA, most likely, despite height limitations...