@zimoun You posted this link 100 times so I’m aware of it. :-)
I agree on the “principles” part (not on GNU: that ship has sailed).
(There’s prior art too, including with the “GNU Assembly” I and others tried to bootstrap in 2019–2021: https://gnu.tools … itself a followup to discussions started ca. 2011. Not to mention “Open Source Misses The Point” and other things from the early 2000s.)
My point is: the “common strategy” approach is falling apart today.