No he isn't.
Look at the record and ignore the hype.
Points allowed ranking since 2011
20
20
19
24
15 (taking over the exact same defense that was 4th the year before)
His last 2 jets teams set an all time NFL record for the fewest take ways ever by any team in a 2 year span. They had 28 combined in 2 years and Bowles took over and they had 30.
The bills set a franchise record for most sacks the year before he arrived and set a record for fewest his first year.
He is not a good defensive coach. He tells you he is and his father was so people buy into it.
"He creates exotic schemes" yup and they ultimately fail.
If you feel sorry for losers.
On that I agree.