There is nothing more to it than that.
so if you see a buddy trying to RTB with a smoking engine, missing aleron, no rudder, and a goat turd smeared across the canopy, and a LA7 comes in after him.. and he askes for help, your a "picker tard" or such for attacking the LA7,,
oh yea, and I guess anyone who defends bombers is a picker too..'
Buff driver: hey, ive got a A8 comin in, need a little help,
You: well it looks like hes committed, so I cant shoot at him.. sorry.
Ill admit both circumstances are absurd and not what we are talking about.. but thats what you open your self up to when you say " picking is any time you attack a con who is already engaged, period" paint with a big brush, get drips.