Any Beta release [or alpha] of ANY product should always be weighed up with it's potential for 'issues' vs. the mission-critical status of the Computer system it's to be TESTED on.
My work computer....this one I'm using....is important to me presently...as a lot of REAL WORK projects are at critical release stage. I cannot really afford any 'down-time' to play with recalcitrant installs....so I don't.
Next week...I'll give it a go, perhaps.....and any issues I MAY come across....they'll be simply more beneficial input for the coders' beta program.
It's all about understanding the choices you make.
And remember....I'm one you often see loading an iffy shell/theme while shutting my eyes and putting 2 fingers in my ears.....
Just not right now....