@Dany *******
I don't understand why you should call posts from people that have other experiences than you have should not be athentic.
Why are they mistrusted and should need some kind of evidence?
A lot of people here post anonymous, and as long as it is about other things than being questioned on entering the country that is accepted.
You can be absolutely sure a certain number of people entering the country is questioned, for all types of visa that will happen, so why not for DTV?
DTV is not some kind of supervisa for which are no rules and no checks.
Immigration officers will do their job and check some.
No reason not to believe them, unless you are a conspiricy thinker of course.