Back then it was all about "Do it now" Vs. "Do it later".
Most of the time EQ, Compression and even Reverb/Delay FX were printed right to tape.
That was what I did and many, many others did as well. Matter of fact when I first started using Sonar I used this approach and used it for many years. It's a double edged sword as you can either capture lightening in a bottle or capture something that can never be changed. that is the sword of destructive recording.
There is something to be said about this way of working. you are left with data that is, in many ways un-editable.
Every mistake, every little nuance caught on tape in the moment. Joe Walsh has been a big promoter on this method of recording. His stories of how the album "Hotel California" was recorded really zooms in on this way of recording.
There are only so many "Do overs" you can get before it sounds too polished and over done.
Sometimes those little mistakes add up to become collective work of art. A good example would be to compare it to classic paintings done in, for example; 1600's thru 1800's. An artist used a brush to capture his visions.
I believe this is still the best way to work Vs. using Photoshop to fix little mistakes and add vibrance.
There are and will be many different opinions on the craft and how to work using both methods (early and present).
There is no debate though because everyone works in different ways and I could never argue anyone's opinion no matter how bizarre because they are artists and we should respect that. Face it, the best art has been born out of experiment, accident or breaking through the barriers of logic. Which one will you use ?