Well...I'm sure if you had posted a pic of the compressor GUI in your first couple of posts we could have cut to the chase sooner.
Anyway...none of this really has anything to do with old school VS new school as though it's a competition or as though there are many completely different ways to record audio (formats aside).
A compressor or a preamp or EQ at its basic form was/is the same concept back in the day as it is now....hardware or software.
Most new/current hardware follows the same design concepts that were in use "back in the day", so you still have to understand gain staging and signal paths and all that good stuff.
I mean...that "standard" has not changed...it's just that recording newbs who dive into a DAW, never get the opportunity to learn or understand those things without a lot of backtracking and confusion, especially when faced with some added feature sets that might be found in newer hardware designs...and especially software designs.
Recording still follows the same basic rules and standards as it always has. People these days are just given way too many options out of the gate, without those basics under their belts....and it's pretty evident that it's mainly the digital recording newbs who ask the most recording "concept" questions and recording technique questions and the basic "where do I put the mic" and such studio questions. So there certainly is a lack of recording foundation basics.
Some of the old analog guys just ask basic computer "how to" questions...but the audio stuff translates very fast from the old school analog to digital world once you get past the computer "freak out" that some old timers go through.
Also...with an "old shcool" analog signal chain...you really had/have to understand what you were doing, and you still have to if you use lots of analog gear...whereas plugs and software tend to be more forgiving. Gain staging is almost non-existent for digital newbs...shit just gets inserted left and right, and often, I hate to say it, there appears to be total confusion about what *should* go where, because DAWs let you pretty much stick anything anywhere...unlike consoles and patchbays and hardware that will quickly let you know when something isn't hooked up right or when your gain staging is all screwed up.