I think this is a very shallow take. I'm a GPL proponent and have worked on/released GPLed software for a good 20 years, now, and I think it's distasteful to judge how people choose to license the work that they do for free, and effectively "donate" to society.

I do wish more things were covered under licenses with strong "copyleft", but I don't begrudge anyone the ability to license their hard work however they please.

Individuals donating their time and effort to the public, whether that excludes for-profit use or not, is better than them not doing it.

At least I think that's what the person you replied to is trying to get at.