I’ve used both. I find EOD workouts to be better when the overall stress of the workout is higher and/or the person has a more stressful life.
You look at Sheiko workouts, they are heavy (but not with a maximal RPE), use mostly big compound movements and focus on improving performance (they are, after all, powerlifting programs).
Jones’ programs are the polar opposite in that they used mostly machines, for higher reps. HOWEVER they were like a 12 on 10 on the RPE scale! When you trained with Jones you often had to be carried from machine to machine and lots of people puked… and these are not exaggeration. Failure was often just the beginning of the set. And his “sets” were often super or triple sets (a traditional example was a triple set of leg extension + leg press + squat machine…all to failure and beyond). That type of work caries a HUGE training stress even with a low volume.
In both cases, the body and nervous system can be shot the next day. In Sheiko’s case, likely less. But since they are performance programs, the key was avoiding any decrease in performance.
Now, most people who underwent Jones’ HIT programs didn’t train anywhere near how hard Jones pushed his guys, even if they were well intentioned. So they likely could have trained more often.
Now, with athletes I use something close to an EOD structure. We train Monday/Wednesday\Friday and have a minor session on Saturday (isolation/machine/hypertrophy work). Because I want full recovery from each session to optimize daily performance.
If muscle growth was the only goal, 5-6 weekly sessions could work. In fact this might be better for competitive bodybuilders.
NOW, if you have a stressful lifestyle and find yourself to have recovery issues, training every day, even with a low volume of work, might not be recommendable.
Because even if the volume is low, if you really push yourself you will still have a strong cortisol/adrenaline response, not as big as an equal intensity session with more volume, but still. If your daily stress level is high, you will already produce a lot of cortisol/adrenaline and the amount you get from the session might put you over the edge. In that case, the daily workout and high daily stress would basically give you no days to give your body a break.
I’ve worked with plenty of clients who trained 5-6 days a week. But they all had very little life stress.