Well, "every D1" player including walk-ons is A LOT of people. I'd bet a lot of money that there's one who can't dunk. In fact, there are ELITE NBA players who can't dunk really:
Jameer Nelson:UNCheat's Kendall Marshall never dunked at UNC and hasn't in the NBA.As the former Saint Joseph’s standout says in the video, “I dunked one time, but I’m not a crowd pleaser.”
Steve Nash never dunked in his NBA career nor in college.
Steve Blake, Jamaal Tinsley, and Luke Ridnour are others apparently.
https://bleacherreport.com/articles/...-who-cant-dunk
Do you think Connor Williams can dunk?
https://www.youtube.com/watch?v=uIor...=PSCHighlights
I don't post this to denigrate, the video above went viral for his effort and he's apparently known as a great teammate and human being. And he apparently has appreciated the attention largely.