You can’t permanently turn it off. It is a new feature that Airtable is testing out. Several people have already requested the ability to go back to the old functionality. I think we have to wait until Airtable makes the change.
The new View sidebar is ok, but does it have to be open by default? Every time I open a base it’s there. It’s just a waste of time to close it manually if the default view is what I want. All I wish is the option to turn it off.
I NEVER had any complaints about airtable, infact, I loved it until… this annoying “views” category continuing to pop up all through out my day, every day. I am currently looking for other options from other apps to see if I find something with better user experience.