I have no reason to believe there are many fake stories. I don't understand why some people think stories about checks are not real. Why should the stories scare somebody? A check will cost a bit more of your time, but what is an hour on a stay of months?
As long as you comply to all visa rules and can prove that when necessary you have nothing to fear.
Obiously there are a lot of DTV holders not complying to the rules, and for that group it might get more difficult, but even for that group the chance to get in trouble is not very high at the moment.
Routine checks will always only be a very small percentage, and when you comply to the rules you have nothing to fear when checked, so the stories of people who got checked have nothing to do with scaremongering, just telling facts