I believe it's common enough. I've been around these forums long enough to see it. But, I'll switch it up. If I go into the MacRumors Intel Mac forums and ask for help about my 2006 or my 2008 MacBook Pro what do you think the response will be?Do you seriously think that that's a common scenario when certain people keep posting the same rant in various threads? Are those people genuinely new users to iOS and genuinely don't know about this, while they have been sideloading on Android? Correct me if I'm wrong if you have examples, but I have not seen that scenario at all here.
And even if that's the case, what do you think is the proper answer? I believe when the demand is something that is specific on Android, then the answer to use Android is appropriate. Ranting about iOS not able to do the thing endlessly won't do anything.
And I do believe many here are helpful to people who genuinely have questions about iOS.
Historically the only response has been "Get a NEW Mac!!!" There's a reason that early Intel Macs have been supported by us MR users in the PowerPC Mac section for a number of years and it's precisely because of that response. You'll get very little help in the Intel Mac section if you aren't using a Mac that's a year old or less. That doesn't mean all users in that forum are that way…but enough have been over the years.
Maybe that's changed in recent years…but there's now an Early Intel Mac forum here on MR so I go there instead.
No matter what forum there will always be the troll ranting about something who won't listen. That's a different thing…Usually they get shut down. Again, I am speaking of the genuine user seeking help that gets told Apple isn't for them.