I've always thought in some cases the GOAT and the Best could be separate.
For example:
Jose Aldo is by far the most accomplished Featherweight of All-Time, however he is clearly not the Best FW of all time as he lost to Conor, Holloway 2xs, and Volkanovski. The "Best" FW of all time is probably Conor or Volk at this point, but they havent accomplished nearly as much in the division as Aldo did.
GOAT is more a measurement of accomplishment , which means Jose is the FW GOAT.
How do you measure GOAT and what other instances of this can you think of, if any?
The main point of resume is to prove your the best. If you can prove your the best with a less decorated career I don't see what the issue is. There needs to be some balance, guys like Romero who are considered the best by some with no belts is too far in the other direction. But I'd take Weidman's 3 defenses over AS's 10 for example(MW's a mess cause the guys better than AS and Weidman were less decorated), Holloways 3 title defenses over Aldo's 7 because Weidman and Holloway beat the more decorated champs twice, Max had a 13 fight win streak one of the longest ever. If Volk beats Holloway a second time he'll have beaten all the greats in his division(except Conor who'll also have less defenses), hard to say Holloway or Aldo's GOAT(Conor then becomes the main alternative IMO).
I'll get where the people defending GSP from Marty are coming from but against better opponents Marty doesn't need 8/9 title defenses to be better IMO if he remains undefeated. Woodley didn't need 8/9 either(4 can be enough IMO, just not the 4 he had). Think Khabib and Tony's streaks put them above Penn and Bendo too but IMO LW's long reigning champions were always the least impressive.
On the other hand saying a guy you think who could beat anyone but doesn't have a belt,only has a few wins is too far in the other direction. I'm thinking Romero when I say this
My view is this is a young sport, and in a young sport, the best at any given time is likely the greatest of all time. Just like the first or second time you fuck is more likely to be the best time ever then sometime later on. Look at boxing, at the same time, they hadn't reached Dempset and Tunney. Not every HW champ but most of them were the GOAT(except Fitzsimmons,Burns). It only becomes hard to be the GOAT when the sport has been around a long time.
HW and BW are free for all's where you could make a reasonable argument for so many guys. MW is weird cause you can't make a reasonable argument for anyone IMO. But everything else I think is more or less the current champs or about to the current champs IMO(Volk and Khabib need 1 more fight IMO, Marty needs a few more).