I actually answered on this question, Netflix are not checking the first month for funds. So yes, you can call it a bypass, only on the next month they will charge.
Ok, I can now confirm you are correct, I just tested with a reloadable card I had laying around and there was no charge, they must of changed this recently as all the previous cards I used were charged a small fee which was then refunded.
So now I have a trial Netflix account I don't need, message me anyone who wants it and you can have it for free.