Half the people in IT have no business being here.

I can't say I've had any issues with the corners, or noticed any difference after upgrading to macOS 26. But this is neat.

I've been using Tahoe since the beta and the borders haven't bothered me once.

I get the UI consistency thing but it's okay to transition to new UI things gradually than making radical changes all at once. If this is still an issue 2yrs from now it will be more of a concern about their commitment.