Thanks for CCing the reply to discussion@, didn't notice that you forgot to CC to.
However, if the Linux Kernel could use the GPLv3 would be better than, as they say, a "Balkanisation of the entire [snip] Universe upon which we rely".
Those who wish to do evil, or allow evil, will always think lesser about our goals.
Or do you think that if the Linux Kernel 'll stay with GPLv2 this won't be a problem ???
Unless you get agreement from anyone who has ever contributed a legally significant amount of code to Linux, then Linux will stay as GPLv2 only.
Then, you think that the "Balkanisation menace" is only smelly FUD,
Yes.
and that GPLv2 and v3 can cohesist without problems ???
Yes. GPLv2-only has co-existed with GPL incompatible licenses for a long time, so why not here. The GPLv2-and-later can easily co-exist without any problems too.
I'm not an expert, but we can have a GNU toolchain v3 and a Kernel v2 ???
Sure, why not. The BSD folks had a GPL incompatible license, and used GCC all within all known legal bounderies.