I've got no problem with doing it in the UK, in fact I'd prefer to do it in the UK.
But after dropping into my local school I was told to budget for £8,000 to complete my PPL over 8 months (April - Nov) I asked the school in April and they said there is no reason I can't get my PPL by the end of the year if I started that month. The fastest anybody gained their PPL in Cardiff was over 3 months and that guy was full time
So with these 21 day FAA PPL adverts for £5k ... I guess it's pretty inviting. I know 21 days might not be achievable but my employer owes me 7 weeks in holiday leave (I've been saving them for this course) and I can make a maximum of 6 consecutive weeks.
As for your comment on supporting our economy ... if our government looked after us and kept the fuel costs down I'm sure the flight schools would have a better chance at being competitive.
Diamond C1 at $129 (£83)
Piper Warrior at £145
Can you blame anybody for doing their PPL as cheap as chips in order spend their saved cash on ATPL exams?