If you are of the opinion that the UK GA scene is in a pretty sad state at the moment imagine what it would be like without people heading out to the US or further afield to get their licences.
If you go to any overseas FTO you will see a complete cross section of society from young wannabees aspiring to go commercial to mums and dads and older folks that have saved hard to learn to fly. The only thing that they usually have in common is that they can't afford the prices in the UK nor have the time to spend up to a year getting a licence. These people will all need checkouts to fly the club hack or group aircraft, possibly add an IMC or multi rating on their return and give the UK some much needed cash. So go and b*tch and moan about them if you want to but I would suggest you don't bite the hand that feeds.