Anyone shopping around in the last 1-2 years for which game engine their first/next indie game should be already sees a ton of "just use godot, especially if you're making a 2d game". Unity's future as a legacy engine was already set in stone in the eyes of the wider indie gamedev community before this announcement.
Open Source Javascript stuff is also kind of hot, considering that mobile devices are getting fast enough to side-step how slow JS (for 2d games at least).
Also Open Source Rust stuff is also going to be popping up on less esoteric radars soon.
Unreal Engine (not libre) is getting easier for indie devs to make higher-end projects.
Any way you look at it, Unity is surrounded by all sides. It's just a matter of time for the momentum to manifest as actual games/studios.
I still can't believe godot decided to create a new programming language just for the game engine 🤦♂️ . It does look like it has some C++ support now (not that I know C++).