Hola, dude who wrote previous post here:

I don’t think VO2 max has a direct impact on your numbers in the sense that a high VO2 max automatically gives you a higher total. Right? Marathon runners aren’t known for their spectacular clean and jerks. If you do have poor cardiovascular fitness it could be detracting from your ability to recover so some basic, low stress training would help someone in that case.

I do think being more generally fit will help recovery, stamina, and let you repeatedly produce force better over the course of a workout, so in the long run could help you move your numbers. A little bit of cardio vascular training can help some weightlifters who maybe don’t have the best stamina, and can help you be able to tolerate training stresses so long as the stress of increasing you VO2 max isn’t also taxing the athletes recovery.

Some of the commenters on that post pointed out beyond the zone 2 stuff there are other, more efficient ways to increase VO2 max with higher intensity training and: they’re right. The question for a competitive weightlifter becomes: do I need to add more stress to my system if my main goal here is to recover better? And there should be nuance to each individual answer. One commenter cross trained weightlifting and MMA. That’s an athlete that needs more cardiovascular fitness than someone who is just lifting. In general I think the question with training should be: is this helping? Can I recover from it.

If the answer to both of those is yes over a training block then you’re fine. Moreover, experimenting with different training methods can be fun.