CS GO beta shouldn't be allowed anymore

True.

Any particular reason?

It will still work after the game is released, same happened with the CS:S Beta.

Agreed

Or, at least make BETA and normal option for those 2 weeks until release - if there is some kind of obvious difference (like in description) in gift you get, since I guess some people might still want to get beta in case they can't get full...

How can i know if it's the full version or only beta? And how can i join a full CS:GO giveaway if i have the Beta in my inventory? Is there any way to join a full giveaway of CS:GO?

open beta already come or not yet?

Agreed.