Doctor said “why would you do that” about baby lead weaning...

I asked my 6 month olds Doctor what he knows about baby lead weaning and if I should start doing BLW. He asked what it was...he didn’t know? And when I briefly explained it to him he said “why would you do that?” “Just do purées”

Is BLW bad? I’m so confused now...being a first time mom I don’t know what is best now for my baby.