It seems to me, no.
In the vast majority of cases that we face in everyday life, it seems rather obvious that the Gettier problem doesn’t apply. In other words, it seems legitimate for us to claim knowledge with a justified true belief in most cases.
But what Gettier did show is that the JTB account doesn’t necessarily guarantee knowledge in every case you could find yourself in. JTB is a necessary condition but not a sufficient condition, in other words.