Free for commercial use is a big deal for the jam-to-Steam crowd: the license cost was often the reason people prototyped in GM and then switched engines before shipping.

The part I'd watch is migration. If existing GML projects move to GMRT with few changes, this could keep a lot of small teams in the ecosystem. If it needs a rewrite, people will compare it against Godot fresh anyway.

In the end any tool is good enough, if the dev is. ;)

Oh well. I remember using Game Maker back in 2005 or so.

It was a good and easy way to learn programming. But is it serious enough to make real games nowadays?