That makes sense that Pablo might have gained back some weight since December. That said, it's quite possible that Pablo is lighter than when he left last offseason. As someone else mentioned, when a fat person loses 20 pounds, it's really noticeable.
To the bigger point, Pablo was the same size when he played in SF, and he was, on average over his 6 full seasons there, about a 3 WAR player each year. If Pablo had played like that last season, his weight would not be the issue that it is right now.
LOL about fans "masquerading as comedians". You got that right.