(Former placekicker here.
)
That’s mostly the case on long field goal attempts, ironically enough. Attempts from inside of about 45 yards are still usually made with a 7-yard placement.
On a long field goal, the holder sets up 8 yards behind the line of scrimmage, because the kicker will be attempting to hit the ball with a lower trajectory (sacrificing height for distance); the extra yard is there to give the ball a little better chance to clear the defenders who are trying to block the kick.
Another factor which has made it more difficult to break the 63-yard record is the “K-ball”. Kickers are far more accurate, with (on the whole) stronger legs, than they were 30 or 40 years ago. In addition, the balls which were used in games had often been “broken in” a bit, usually by the kickers – no one who handles a football likes the shininess and slickness of a brand-new ball, but the kickers and punters especially liked to break in the ball a bit, because doing so makes a football just a little bit rounder and softer (both of which make the ball easier to kick). This “breaking in” didn’t just consist of kicking the ball a few times – some kickers would work with their equipment men to do all sorts of clandestine tricks (such as bouncing the balls around in a clothes dryer), all in the name of getting footballs which were easier to kick.
In the 1990s, the combination of better kicking skills and broken-in balls led to the field goal becoming a far more reliable play, from further out, than it had been. (They also noticed more and more kickoffs going into the end zone, but this was before the current concerns about concussions on kick returns). The NFL wanted to encourage teams to go for touchdowns, rather than field goals (as well as to encourage kickoff returns), so they created the “K-ball” in 1999. K-balls are stamped with a “K”, and they’re intended to be used only on kicking plays. They enter the game absolutely brand-new, with no chance for the kickers to break them in. There’s a designated ball-boy at each game, who only supplies K-balls.
Obviously, the K-ball hasn’t entirely removed the long field goal from the game, as two of the three kickers who have tied Dempsey’s record have done so with K-balls, and you have kickers like Janikowski and the Rams’ Greg Zuerlein, who have huge legs and have demonstrated the potential to shatter the record, if the circumstances permit.
An article from Sports Illustrated in 1999 about the K-ball:
http://sportsillustrated.cnn.com/vault/article/magazine/MAG1017189/1/index.htm