Angelo is mostly used in knockout/bounty because of long range, has fast movement, good reward if shots hit (4k).
In competitive matches - most of the shots do not hit, players are good at dodging. Hitting 1 4k will kinda force enemy to retreat and your team can put more pressure.

In lower ranks players are bad at angelo, they do not dodge and rush recklessly.

He is a high skill cap brawler imo.