Per this thread from a few days ago, De Silva first appeared on Omnipedia as the identity of the fourth body recovered from the helicopter. Now, it’s possible that that was legitimately incorrect, but, if not, then it’s a mistake to attribute the scrubbing of mentions of De Silva to De Silva himself, because he’s dead.
Not sure who else would want De Silva hidden though, or why. If Zhupao is engaging in mass (possibly illegal) neural mining, it makes sense they’d want to cover that up. But De Silva is just, like, some guy.