Yeah, he sounds salty. Revisiting the past usually always sounds salty. There is a lot of truth in there and Mayweather fans won't like it.
ODH just did it in a more aggressive and demeaning way than the boxing writers do. The truth is Floyd is an all-time great and he will be remembered as such and ODH knows this. His point is true in that Floyd won't go down as having a great resume compared to the other historically great fighters because he didn't fight most top level fighters in their prime and did take a more cautious career path (without every blatantly ducking anyone). Floyd's one chance to erase that was a fight vs. Pacquiao while both were in their primes. Now Floyd shouldn't carry the whole burden, there is plenty of blame to go around, but it happened. Now when you look back at Floyd's career there is usually two career defining fights: his fight vs. ODH which built him into a PPV star, and Corrales, as many view that as his greatest performance ever.
There will always be criticism over Floyd and his fear of losing his "O". To casuals, losing a fight is a big deal; to historians, losing a fight often times can elevate your historical perception because it likely was vs. another excellent fighter. This is where ODH wins. Off of just wins and losses as numbers, most casuals won't be impressed by ODH. Do the real digging and see who he fought and ODH will always be viewed with more reverence than many fighters who had better records because he fought the best of the best for a long time.
Now all of this wasn't Floyd's fault. He didn't fight in a time period where the competition was quite as good as when ODH was in his prime. But there were opportunities to build a wall against that argument and for various reasons certain fights didn't happen. Floyd is still an all time great.