No one is calling you a cheapskate. It’s just that when you said this:
its not a noble cause to pay some dude who made an app we dont need
…in context, it comes off as “Sync is not necessary to exist, therefore no one should pay him.”
I understand what you mean now, but you worded it terribly.
And by the way, going around in the comments being unnecessarily hostile and calling people “dumbfuck” or “asshole,” when they were just as confused at your poor phrasing, makes you come off as an asshole, so maybe work on that :)