Hard disagree. I am positive I could do this, but I do no cardio. The weightlifting I do has had little effect on my cardio fitness as it relates to doing things that would increase my VO2 max.
I was in this same boat.
I just walk about 25k steps a day and lift weights.
Didn't really have a form of cardio i liked. I could never be consistent with running. I settled on this combination with stairclimbing and farmers carries.
If you can't do that it definitely is a sign you don't exercise anywhere close to enough, I know 80+ years old who could still do this