Jacoby Brissett is a QB1

Since getting the starting job in Week 6, Jacoby Brissett has the third highest fantasy point average among QBs with 3+ starts (behind Josh Allen and Patrick Mahomes).

He's only rostered in 50.3% of leagues on ESPN, 38.2% of NFL.com leagues, and 62% of Yahoo leagues.

Am I missing something, or is he being way undervalued at the moment?