One reason it could be nice is what I experienced a decade or so ago, the damn machine kept changing video modes during boot and the LCD couldn't keep up so an important screen was missed when diagnosing a boot issue.
Had to get a CRT to see what the hell was going on.
This even applies to remove-viewing software that wants to "follow" the resolution changes, flipping your remote window size around a lot. Super annoying.
Had to get a CRT to see what the hell was going on.