I get suspicious, too, but I think a few people just decided to get good before joining, like I did. Those of us who have been around for some of the previous cheaters can generally spot them. Being able to beat a Bansai record by one or two seconds doesn't make me suspicious. A 7-second solve when the previous record was twice that, then a bunch more in a similar time range, that would raise a red flag.
Slotted spoons don't hold much soup. - Stephen Sondheim