I remember building dial-up internet providers in the late nineties(97/98) here in Brazil as a teen, and some consulting folks trying to sell us some Solaris licenses, laughing at us because we were using Linux, 'that toy OS'.
It would be kind of easy to make a stand against the microsoft fanboys against NT 4, but it was much more difficult to make a good case of Linux against Solaris back then. (Remember Linux starting to be taken seriously by 2.2 and 2.4 period)
Also i got the same dismissive snarks, when installing and programing in PHP back then to make dinamic websites, in a world then taken by ASP and Cold Fusion. (And the other alternative in Unix were only Perl, for which i thank PHP for avoiding me the trouble).
It's a reminder for me, that the most common trend in IT sector is of folks with a "colonized" sort of mentality, that will fail to recognize the things that will turn into real things in the future.
It's sad when you think that its even worse than that, giving most people just show off and wait for their next paycheck. They dont even bother thinking in those things.
So the psychological profile of who are saying what is kind a very big deal, not just what they are saying.