Yeah it absolutely drives me nuts - especially since the only way to push these people for throwing relentlessly is to make them miss. That's not how real life works.
If you're gonna throw relentlessly at the air because I'm able to time your movement in and out then you should be heavily punished stamina wise for that. These guys are throwing endless combos at the air and hitting block wrecklessly. They throw until they land on something and rarely is it calculated.
Just a horrendous representation of the sport the way it's currently oriented.