Greg Coleman with the Vikings was another black punter, and the Bucs had a place kicker (Igwebuike?) who was black.

The soccer connection doesn't explain the lack of black kickers in the NFL. US major league soccer has to be 25% black players by now.

Kicker probably doesn't generate a lot of passion for young urban kids who are looking for a ticket out of poverty. The only position less glamorous is long snapper (how many of them are black???). Kickers also have to struggle at their trade, most of them don't get drafted and get cut multiple times before they stick with a team. If you're a kid from the inner city looking to support yourself and your family, that is probably not going to be a very appealing career path.