I've just read most of this thread. Yes you should be cross and you are not over reacting.
I have found plenty of second cousins and nearer actually on both Ancestry and GR.
It is distressing to find photos and gravestones of loved ones third hand on someone's tree who is only related via X marriages. Looks like it's the name of the game.
I have made my Ancestry Tree private and like some earlier poster said, if someone wants to get in touch then they can.
It is difficult as you don't want to 'hide' all living relatives otherwise you might not find them!
I don't know.
Regarding the number crunchers (who always copy wrong), it's a hobby for them, like doing a puzzle. People seem to do family trees for all sorts of reasons. Mine is has quite a few people now, over a thousand, but I do try to keep to direct descendants, but there are so many of them!
Think I'll calm down and make my Ancestry Tree public again at some point.
Steven - bed time