This guy knows what he's talking about. As bad as Tyson was (was he bad? somebody sad he was bad), he's remembered for knocking out a bunch of random faces before meeting the past-his-prime Larry Holmes and then the only other true greats in Lennox Lewis and Evander. Heavyweight isn't a great division to see great fighters all the time. Tony Tucker, Spinks, Frank Bruno, are any of those guys even talked about these days other than being Tyson fodder? Nobody will remember them.
I use that same logic to temper the "legacy" of GGG a bit as well. He came up in a shitty MW period that is just now starting to overlap with Canelo's rise. It's not completely his fault, but I can't help but think whether he would've earned his place in the HOF as easily during the MW era of 2008-2012, where names like Jermain Taylor, B-Hop, Kelly Pavlik, Paul Williams, Sergio Martinez, maybe even Arthur Abraham, etc. He's actually the age of taylor/pavlik/martinez/williams but just didn't come over to the USA in time.