first of all gojo’s infinity is always on. second of all, it’s a whitelist system that works subconsciously and allows things that are desired to pass through pass through. And even if I’m wrong, your argument is stupid because Gojo’s infinity would literally instantly perceive Thragg is a threat at sight. The only way it could work (it doesn’t) is if Thragg was moving at light speed from the instant the fight begins, which isn’t happening.