How do we know them 203 individuals were not himself, just sending to different wallets? Or he set up a pool and gave himself 550,000? Again, this is why people do not like pre-mined coins because you can never truly be transparent, we are still just taking his word that the coins send to them wallets were not his own.
First of all I see 1634 individual giveaways with over 9mio coins spent ??
Second of all, feel free to look up the giveaway-thread, copy every single address, and look for them in the chain explorer. There you can track every transaction.
Still he could have faked 1600 bitcointalk-accounts over a period of several years, and in infrequent intervals posted stuff to make them more realistic, to then give more coins to himself from the giveaways...

That doesn't sound like a bunch of tedious work at all... [/sarcasm] ^_^