This has to be what he expected. Even better, actually, since it appears he at least has one supporter left after the story of the week being his spinning of Chase Elliott last weekend.
Honestly, a few boos and thumbs down is even milder than he encountered last week when a fan tried to fight him after the race.
Related: Video: A fan gets on the track at Martinsville and and tries to go after a driver
Hamlin has bigger things to worry about than a few disapproving hand-gestures, however, as he is three spots down from the cutoff line in the playoffs and only one spot ahead of Elliott who won't say whether or not he is planning his revenge.