I don't have a problem with the 2% fee, as others have said, if his free software earns me $1000 a month, I am tipping him what... $20?
I'll give my waitress / bartender more than that on a single night out of dinner and drinks with friends and family.

Just put that into perspective...
Yes, he is EARNING mad money from the single tiny donations from millions of people, but that's how you need to be successful in this world.
Look at Android and IOS apps. Many developers charge $1 for their product, hoping to gain a tiny fraction of income off of LOTS of individuals.
Look at people looking for $1 donations from people on Twitch / Youtube.... those pennies add up.

In this global economy, that is the future.

Remember office space?
https://www.youtube.com/watch?v=yZjCQ3T5yXo

My only issue is if he is LYING about the %.
If he says 2% but takes 3%? Then yes, that is BS, and I would support bypassing his lying.