As they still are, but the rule book (except possibly in the "formation example" diagram) has never referred to the position by that name -- except in Canadian rules where it was first "centre scrimmager" (or maybe just "one of [whom]", referring to the players of the "scrimmage"), then "snap", then "centre". And with unbalanced lines possible there's all the reason for coaches to abandon that term. And it does seem there's a trend in coaching lately for the term "snapper" to be used more than it used to be.

Robert in the Bronx

I guess it's easy to be brief when you don't have to concen youself that what you write actually matters, means anything or serves any purpose.

Thank you for validating my point!

Counting words? Thanks, I needed a good laugh!

my favorite one---
 

very close game--going down to the end--the team behind lines up in a "muddle huddle". They shift and from my UMPIRE position I see that the snapper is on the end of the line and is wearing #85. OK. The ball is snapped--he trots past me and I see the QB looking behind me--he rifles the ball past my ear--I spin and see #85 catch the ball and trot into the end zone untouched for the winning score. Cool !

Not it that "Wild card" is the snapper and wearing a number other than 50-79 as by rule he can not be on the end of the line.
If that "wild card" is the snapper and wearing a 50-79 number, it would be legal as the team would not be utilizing the numbering exception.