Earlier quoted context omitted.
That's true now, but Valve has been like this since the start, way before skins and microtransactions.
You’re ignoring how much of a role the TF2 hats played in pushing microtransaction skins. Steam came out in 2003. TF2 hats came out in 2009. It’s lived in the world of micro transactions way longer than it lived in the before times.
I bought TF2 with the Orange Box, and for a few years it was amazing. Then it went F2P with hats, and overnight the player base turned into a cesspit (and the hats themselves completely ruined the aesthetic that they spent years painstakingly crafting).