You can search for the Canelo Josesito Lopez fight & see that Seano was vehemently against Canelo fighting a smaller man on that occasion, but now he loves the Canelo vs Khan fight even though it's the same thing. So what changed?
Well Seano is a Floyd nuthugger to the core. So after Floyd beat Canelo, he saw that if you diminish Canelo in anyway it will take away from Floyds win & overall legacy. So everything Canelo does from now on will be cheered by Seano (even if he takes easy fights & fights at catchweights) because it's all a testament to Floyds greatness. So for Canelo to be considered lineal champ & defend his belt many times in a big deal to Seano cause it all makes Floyd look that much better. In that regard any criticism of Canelo can be seen as criticism of Floyd to him & that's why he interjected himself into this thread.