It does make BM look bad though. We can assume all top tier acoc users can defend against BM's homies attack without much of an issue. Her homies will become non factor in the fight.
How is that different to anyone else, though?
For most character, the
only thing they can do against
anyone's attacks is defend against them or else they'd be crippled by direct blows. That means Roger's sword, Garp's fists, Whitebeard's Gura blows, Akainu's Magu attacks, etc. All of them basically have to be blocked (and are in many examples) in order for those fights to even happen.
So why is it just a bad look for Big Mom that an attack she threw out that didn't even have any Haki in it was fully defended against by one of the strongest characters using one of the most intense Haki coatings we've ever seen? By all logic, the same would've happened to basically anyone else's comparable attacks.