Really looks like what we have here is a case of the zeitgeist.

Bill and Ted’s Excellent Adventure: Released to theaters February 17, 1989

…wikipedia.org/…/Bill_%26_Ted's_Excellent_Adventu…

Wayne’s World started as an SNL skit, first appeared February 18, 1989.

en.m.wikipedia.org/wiki/Wayne's_World

Although Bill and Ted, as a production, goes back to 1987.