That’s not entirely true. Most fleets don’t change doctrine fitting every 5 minutes. In fact the very fact that so many do fly doctrine fits means you can tell exactly what fit they are flying simply by looking at the fleet composition. I’ve gate camped in mixed fitting ships as well, but even then you know that ships involved in that are going to have to have certain modules. It’s not like anyone’s flying a fit where you think ‘ oh….who’d have thunk of that !’
As you refer to Concord and Jita….I can only say that your claim that people check killboard in highsec before deciding to undock is laughable nonsense.
Seriously….you check the killboard of every single one of 1,800 people in Jita before undocking ? Was the last time you undocked in 287 BC ?
And you don’t need killboard to tell you whether a ‘new’ char is genuinely a noob. You can generally tell that someone flying a Vargur when their char is only 9 days old is either a real noob with more money than sense, or a vet in a new char with lots of skill injectors.