Cardio is a tool, just like anything else we use to fine tune our training, hobby, and approach towards our goals.
Depending on the clients goal there is the #1 factor on the impact of cardio
Powerlifting/bodybuidling? I think it should be limited to the least amount as possible to focus on your nutrition and performance in the gym. Bring cardio in when needed for dieting to help buffer the caloric deficit.
General Gym Goer --> Do enough for heart health (1-2 HIIT Sessions a week or a few 20 minute walks)
Endurnace Athlete --> Much Different Ballgame (Cyclist, marathon runner)
There is no one size fits all here as it is a very black and white question based off the individuals goal and what they are looking to do. I can bet you everyone can get away with next to no cardio if they would just adjust the amount of food they eat to match their maintenance. Some people just prefer to do it and enjoy doing it, which is fine, but just realize you may need to add a bit more food to find the homeostasis for their goal (Cut/Bulk/Maintain)
Due to the physical demand on the body and recovery there can be limitations to put into perspective. How one recovers with or without cardio, how intense one performs cardio (LISS vs HIIT), how one structures their diet (low carb will favor LISS as you want to tap fat reserves, higher carb can utilize HIIT due to utilizing glucose as primary fuel source).
So again, its almost impossible to just give a cut and dry answer as to how we view cardio, the individuals goals, and what they are trying to achieve.
One thing is for certain you see in gyms is people WAY Overdo cardio, and think its a necessity which is far from true because either their diet is inconsistent, or they are just misinformed thinking more = better and you have to do it in order to be in great shape. I personally would limit cardio regardless of your goal and focus on your performance, and optimizing your training.