Of course he should be allowed to fight! This issue isn't like steroids, where your opponent doesn't know that you're juicing. It's not like Fallon Fox's situation, where your opponents (2 of them) are unaware that you developed as a man for most of your life. It isn't like Margarito's loaded gloves.
Palhares holds submissions too long, and he specializes in a particularly dangerous submission. If anyone is willing to face him, an organization is willing to hold the event under its banner, and an athletic commission is willing to sanction the fight, why would anyone object to that?
Arrelione graciously shared his betting superiority with me, revealing Weidman would make Andy look the fool, but I foolishly doubted the word of Arrelione.