A few women post in their profiles that they will see only men with “height appropriate weight.” So if a 5 foot tall guy weighing 400 pounds shows up, I think the lady has every right to refuse service. Guys should up front and honest.
As for my experience, I’ve come to expect that most women fudge a little on their vital statistics. I noticed one that was 37 for 7 years. I have not encountered one that lied so much that I wouldn’t see her. Maybe my day will come, but I normally screen pretty closely and avoid newbies until they’re established.