That's right ..... they had to cut ALL the songs for an entire side in one pass and if they messed up anything, they had to do all the songs again.
I have a Tower of Power LP that's direct to disc and it's a really awesome disc as you're actually hearing them about as live as it gets.
Ha ha, Tower of Power D2D; I'd have never guessed that one. Very cool. That's one of those if I saw it in the record bin, there'd be no way I could pass up buying it

.
It just goes to show yet another way (as if we need yet another way

) that audio recording sensibilities get all twisted over time, yet in some ways stay the same. Think about it:
Commercial recording started out mostly direct to disc.
Then tape came along, making things easier on the performer but tougher on the engineer (anyone who had to edit and punch with a razor blade understands.)
Then D2D finds a revival as a high-quality audio alternative to the evils of tape.
Along comes digital, making things easier on the performer again. So easy, iin fact, you don't even need a decent performer; any jackass can just sample and drumagag and autotune their way through the project.
This, of course, puts the burden of actual work back on the engineer, who longs for the simple days of mixing by razor blade and getting the sound right
before sending the project off to mastering.
And the big irony is that we wind up at a stage where we have people desiring tape emulation plugs to try and acheive that tape sound that people used to try to avoid as a bad thing.
Yeah, things just keep getting better every day

.
G.