Question

Why flatterer is harmful than a foe?

Answer 1

Yes

This is so because a flatterer keeps you in an imaginary world and doesn't let you understand your flaws. A foe criticises you. so you can improve your mistakes / faults

Answer 2

it is because:

1) flatter keeps u in imaginary world
2) it never tell your mistake
3) it never see your development
4) it always gives u wrong suggestion