As I always say volume and frequency are inversely proportional. So yeah, if you train less often you can (and likely should) do more volume.
That doesn’t necessarily mean doing a high volume of work in the absolute sense though. It means doing a high volume of work FOR YOU. This means that if there is a point in your workout where you feel like you motivation/focus/energy goes down, then that is too much volume.
That’s what I don’t like about low frequency training: you need to do a fair amount of overall volume to grow from it (because you need to stimulate each muscle at least twice per week to get a good rate of progress, so it means that with 2 workout sessions per week you need to train every thing at both workouts). And not everybody has the neurological and physiological profile to be capable of doing enough volume for every muscle group to progress optimally with 2 sessions a week.
If your goal is strength then it’s a bit easier. You can simply do heavy/low rep work for 3-4 basic lifts and you’re good. But if you want a complete physique and maximum hypertrophy you will likely need more than that, and I don’t know that many people who can do that amount of work without having a drastic drop in workout quality… they will be able to “do it” but it might not be as productive.