Orangepest uses it in a niche situation. Ask him about it.
I don't need to ask him about something which hasn't changed for years, used it plenty (more so when Advance Warfare was meta) and have asked for years for anyone to actually fix it and even get it acknowledge by Relic twice (once in this forum).
If you strafe someone, from the direction of their base towards yours, if they retreat you might do excellent damage if they still remain in the tracking zone. But towards the sides, in the zone you put it or forward, it can do 0 damage and depending on armor, no dmg at all.