First of all, saying that Vince Gironda was "right or wrong" about anything bodybuilding-related is like saying Christian Thibaudeau was "right or wrong" about anything bodybuilding-related. It just ain't that clear cut.
Gironda advised certain strategies during a certain period in the history of bodybuilding, and while some of his recommendations may be contrary to current thinking, he was a legitimate groundbreaker and proponent of a bunch of concepts that people still use today. He was one of the most popular and successful trainers of his era for a reason.
I think you're either misinterpreting or misrepresenting some things that Gironda wrote back in the day. Where are you pulling these ideas from?
"The strongest men in history have always been big milk drinkers, BUT, remember - USE ONLY CERTIFIED RAW MILK. The enzymes have not been destroyed by heat (Pasteurization).
Weight gainers should try to take at least a pint of liquid (I suggest CERTIFIED RAW MILK) at every meal and drink one pint of water or boullion after every muscle exercise during workouts."
- From "Vince Gironda's Blueprint for the Bodybuilder" (Note: The capitalization/emphasis was his.)
My opinion: Three solid meals plus a gallon of milk a day is a time-tested, no-frills weight gaining plan, but there are other very effective nutrition strategies like carb and/or calorie cycling and peri-workout planning.
"I believe that a beginner does not need a day of rest between his exercise sessions.
I advise a beginner to train six days a week using one set of each exercise only. The second week, I allow him two sets of each exercise, and the third week he gets three sets per exercise. Thereafter he stays with three sets for six months, but the exercises do change."
- From "The Wild Physique."
"Therefore, I say, that when you feel you have reached your sticking point, take a week's rest and then resume whatever regime you desire; but I also recommend that you take this week's rest each month.
So, let this be your slogan. . . "Work 21 days - rest seven!"
- From "Vince's Corner." (Again, all italicized emphasis is his.)
My opinion: A high frequency, low volume program (as described above) is just one method of training a beginner. I generally see better results from clients using a slightly lower frequency with more work done per workout.
I also don't necessarily agree with the "work 21 days, rest 7" concept, but I do believe that brief, strategic periods of non-training can certainly be useful in the long-term.
"Most people are unaware that the full sit-up and leg raise exercises are notprimary abdominal movements.
The partial sit-up (lifting the body only one-quarter or one-half of the way) is a better abdominal builder."
My opinion: Um... Gironda says crunches are a good way to train the abs. I agree, though I also suggest addressing anti-flexion/anti-rotation.
I'd love to include a quote here, but the only reference to aerobic exercise I could find in the found Gironda books I own is one brief line in "The Wild Physique" when discussing a list of reasons for being expelled from Vince's Gym:
"9. Mentioning the words running or aerobics."
Similarly, I couldn't find his opinion on women's cardio training, since the two pages he spends discussing women bodybuilders in "The Wild Physique" simply explains the benefits of weight training for women.
My opinion: Anaerobic cardio (such as sprints, complexes, or HIIT) seems to be more effective when used as a dedicated fat loss plan, but aerobic training can be useful at times (such as low intensity cardio done immediately after weight training).
Now where do I go to collect my award for longest post of the day?