No doubt --And I’ve seen picture of the BJJ “Grand masters” with their belts tied on the “wrong” side --which is fine, BUT it’s just something you would NEVER see in a legit Japanese Martial Art.
I’ve said this before, but BJJ is a really a “pseudo-Japanese” martial art.
The rituals adopted by BJJ are mostly “Japanese seeming”, but not really traditional Japanese etiquette, per se. Anyone who has trained Japanese martial arts at a traditional dojo, is well aware of the difference. I don’t mean it as a put down --because I do like the relaxed nature of BJJ-- but BJJ has always half-assed the traditions while simultaneously clinging to them.
Carlos Sr trained for --what?-- a couple years then taught his juvenile delinquent brothers. It’s in no way surprising that the subtleties of traditional Japanese Budo & Bujutsu etiquette were not “properly” transmitted in full. --And, one could well argue, maybe they shouldn’t have been transmitted at all?
But, either way, BJJ & Japanese etiquette are always strange bedfellows.