I would say if youre not communicating then youre not playing high level. footsteps and spotting only do so much against another team communicating making strategies. thats why matchmaking tries to accommodate that with skilll differences even though it shouldnt have matched those people in the first place imo since it doesnt work very well from my experiancce.
radar is not a perfect compromise either but its better than footsteps to improve matchmaking. Playing hcs settings in matchmaking should require you to have a mic and you will see how better matchmaking is because only like minded people will try to play that playlist. probably not a good idea now though with the population being so low.