Even if the firmware released it was the "real" PR firmware people would spend their time
1) complainting about how unfinished the software is , why they had to wait so long for such a crappy release
2) calling others complaining about any bug found or even flash / backup restore related issue stupid and inpatient to flash the first hour of availability
"You should always wait till user reports say it is safe, you pay the price of being the early adopter etc..."

For myself it is very simple. Nokia somewhere has stated we could do whatever we like with this device. I have been overclocking and flashing expensive devices since my first 3DFX Voodoo 1 and Pentium 120 , even a S3Virge DX card did not escape at the time.
Nobody needs to explain the rules of the game and if this place is not the place to ask for help and learn about our toys , the what is it?

For now this firmware just works better than the previous one.

Being called stupid because later some game might show not working? Installing the Meego command prompt release and complaining the phone does not work: that would be stupid.