Agree with what other posters have said--literally everyone has been excited for Hammon and thought she'd do a great job in the WNBA, never saw anyone doubt her abilities as a coach, plus she was handed a championship ready roster. If Voelpel wants to write an article about doubters, he should revisit his piece on Banghart from a few years back. That said, Hammon revamped the offense in Vegas and made her mark, but her situation in the WNBA wasn't some huge underdog/come from out of nowhere situation, nor were haters/doubters present anywhere.
All that said, in regards to her situation in the NBA, I don't buy the argument that she needs to wait her turn, I think she's proven she's as well rounded a candidate as they come and would be a fantastic hire for any NBA franchise. In terms of experience, 8 years is plenty even if others have more, and there are also a LOT of coaches who've gotten jobs with less experience:
Steve Nash-no coaching experience
Jason Kidd-no coaching experience
Taylor Jenkins-5 years NBA assistant experience before getting a head coaching job
Willie Green-5 years NBA assistant experience
Chauncey Billups-1 year NBA assistant experience
Will Hardy-7 years NBA assistant experience
Steve Kerr-no coaching experience
Usually the coaches who get head coaching jobs with no experience are former players who have name recognition and were point guards or commentators.
When you look at Hammon, she's the total package. At this point she has name recognition, she has top level playing experience (as a PG no less), she has rave reviews from players and coaches about her work as an NBA assistant, and she just won a championship as a head coach in the WNBA. Others having a couple more years of experience of assistant coaching in the NBA doesn't make them better candidates IMO. I don't think anyone else has the complete package that Becky does, and at this point I think she's proven her ability on every level and would be a slam dunk pick for any franchise.