I don't have hatred toward Weidman, but he and his fans were annoying after he beat Silva the 2nd time. Acting like it was planned perfectly to break Silva's leg... I get being confident, but he was cocky after his fight with Silva and carried that through the Belfort and Machida fights against fighters who were out of their prime, but had big names.
His first true test as champ was against Rockhold, and we saw what happened with that. And then he failed another big test against Yoel, and again with Mousasi. Now he failed again with Jacare, who isn't even a known KO artist or elite standup fighter.
I've never liked Weidman, didnt think he was anything special. I guess it just takes time to show that. Now you can see he wasn't anything truly special once he faced elite competition. The only thing he's managed to put together is a win over Gastelum who he had a good size advantage over. He's never been elite, and was fortunate to be champion when he was. He was better than the fighters approaching their 40's, but once better competition came along, he couldn't hang.
His only shot at being champ again was against Bisping, but that ship has sailed. I don't see him being champ ever again.