actyper;188411 wroteTrue but setting up your image and protecting your BB here is pretty huge. You don't want guys to start picking on you, and with this blind protection see how many walks you get in the future.
Blinds are 50/100 and other than the short stack, the other 6 players have similar stacks. He has no need to defend anything. A reraise commits half his stack and essentially pot commits him on the flop. This isn't the early or even mid stages of a regular sng, this is the end of a DoN and he has good enough chip position that defending his blind is stupid. He doesn't need to win the sng he simply has to wait out the other players until someone makes a mistake. Defending here is one of those mistakes. If he folds he has plenty of opportunity to steal someone else's blind.