She gave her thoughts in a comment:
http://www.danshapiro.com/blog/2012/02/startup-dudes-cut-sex...
Does she mean he has a physical impairment, which would seem more than a bit crass to point out in the context, or is this an idiomatic/euphemistic expression that isn't coming over right?
http://books.google.com/ngrams/graph?content=tone+deaf%2Cclu...
burgeoning, is, compared to erstwhile:
http://books.google.com/ngrams/graph?content=erstwhile%2Cbur...
erstwhile replaced quondam in about 1910:
http://books.google.com/ngrams/graph?content=erstwhile%2Cquo...