Why is the open beta so short?

I stopped keeping track of Battlefield after the dumpster fire of 2042. So I have not been in the loop much. So I want to know why the open beta is so short. EA and DICE need to get this right. We have been without a proper Battlefield since BF4. The release date should be pushed back 3 months so the wider community can test and help shape what battlefield will be. Yes, I know about Labs, I tried to get in it but I was unsuccessful. And only having a small amount of players from the community in labs is nice to help DICE not screw up again but the wider Battlefield community should also weigh in too. More data to look and draw conclusions from and more feedback.

These 2 weekends are no where near enough time to make sure this is not another dumpster fire. This is just a demo to build hype.