All of the defensive legends are boring and not fun to play them

Like many things in a BR game, whether something is effective or ineffective, entertaining or boring, is highly circumstantial.

There are two things which can make defensive characters suck:

1. Solo autofilling. Your teammates are likely to play as if you don't exist, which makes most attempts at support or territory control a complete waste. If you have a working team though, you can really set the stage. Never underestimate having a doorway that enemies can't follow you through.

2. The mid-game. After the dust settles from the hot-drop, and before the ring forces the final squads into very close quarters, most players get an opportunity to take a breather and there is little pressure for enemies to get near you or your traps. Of course this might not be the case if you stay near the epicentre of the action from start to finish (also known as fragments).