I have absolutely no problem with someone coasting, but I wouldn't compare it to sitting on the ball in football or basketball simply bc boxing is prizefighting, there is a show and entertainment aspect of the event beyond simply wins and losses. I can understand why a fighter will coast with a lead and if it's a competitive fight with a dangerous opponent, I have no problem with it, but if in general they fight in a way that's not entertaining, and are not willing to engage opponents who are clearly incapable of hurting them, then that does devalue them a little as a fighter (fighter, not boxer) in my eyes.
If someone outboxes GGG for 10 rds and potshots and runs the last 2, I can totally understand the thinking, it's a competitive fight and they are executing what is the most optimal strategy for them to compete at their best and win. But if someone like Danny Garcia won 7 rds vs someone like Rod Salka and ran for 5, then you have to question what type of character he has, bc it's not a competitive or dangerous opponent, and part of why he's in the ring that night should be to entertain. I think Wlad rightfully gets criticized for this bc he's been in there w/ guys nowhere near his size or level (his MSG fight like 5-6 years ago was painful) and was unwilling to pull the trigger.
I know it could be seen as an unfair double standard, but I think what it comes down to is performing at your highest level. Sometimes running or coasting the last 3 or so rounds is actually the most competitive thing certain fighters can do if they face a dangerous opponent or are outmatched, and I get that. And on the contrary, someone who's willing to put himself at risk with a lead to make a better show should receive credit for doing so