that depends on your opinions regarding free software. people who support the GPL would probably call BSD/MIT less free, because the software is "free, for now," or "free, for me." that might not be good enough for actual freedom to be maintained, along the lines they're thinking about freedom.
i'm not going to argue about that though. surely you're familiar with the territory.
the point, though, is that the GNU ethos is the reason for the GNU tools, and the onus would be on you to show that that ethos was interchangeable with some other in order to get where we are today.
when you're explaining an event in history, you need to take the facts and look for "why did things happen this way after that particular event?" you can't just substitute a comparable event and say "everything would be the same." if we're talking about the legal basis of this or that for the GPL and BSD licenses, sure, you can interchange things and show that "here, in this case, you'd be regretting GPL, and in this case [etc etc etc]." but for the course of history, you actually have to be much more careful with your scope... it's unlikely that one change (one that the primary person involved, RMS, himself took to be the central point of all it) could have no effects, or no salient ones.
notice how these points are distinct. RMS wouldn't but have written the GPL. history worked out how it did. these are different than your or my opinions on the merits of varying degrees of permissiveness in licenses.