so, basically what you are suggesting is organized theft.
kinda, but not really.
If you want to minimize the damage - this should get more attention which will probably warn wallet owners. Also everything would be logged and possible to view by everyone.
Finding a lost wallet with 200
BTC in it surely would be a good thing.
How is this "kinda" theft? Taking something of value from someone else without their permission is theft.
I know mods don't delete or react to possible scams on this forum. However, this is a call to outright criminal activity with most other users of the forum as possible targets. This user (user id, email address, and IP) should be permanently banned.