@cso7777"FLash Mackay" moves at lightning speed in portal TDM, and I'd say about 25% of TDM players rock Mackay due to the speed advantage. Plus add in the fact that Mackay can camp high up in spots that force players to stare at the sky half the game so see if he is camping another "impossible location"...super elite for sure.
And you will notice in TDM when the map radar is turned off, about 1/3 of players go Mackay as then they can camp up high and you won't know where you got shot from (does not highlight location at death), or see them on the map when they shoot. On those portal server, Mackay dominates everyone from height on maps that have lots of elevation via buildings.
Plus I find it odd that the grapple hook Pathfinder from Apex Legends has a longer cooldown time than the Battlefield 2042 "Pathfinder" Mackay, yet EA developed both games, but wanted faster mobility in BF than Apex Legends???
Yet TTK is quicker in BF than Apex Legends so perhaps they wanted BF to be a faster paced game... ¯\_(ツ)_/¯