Not saying your friends do this, but what I have seen is all those who b1tch and complain about film tend to be old people who no longer use film, but exclusively shoot on digital.
And they will have anecdotes about how they used film for the last 40 + years, all the amazing things they did with it, and what a pain in the a$$ it is and so good riddance to it. They seems to almost be offended that it still exists and young people are discovering it and loving it. It's as if they don't want any newbies to experience what they experienced, so they can lord over them that back in the day they were pro film shooters but 'you' wouldn't understand as 'you' are not able to use it.
So they try their darndest to turn people off it, and then berate those that do use it by denigrating them because, well, perhaps there is an envy that they are demonstrating a passion that is no longer within them.