Is using "Unit Marker" option bad?

I still have little experience in multiplayer and wondered about this question. Is it possible to equate "Unit Marker" to cheats? How much is its use accepted by the players?

This is a significant question for me, as this setting may provide a significant advantage, but it is also a toggleable in-game option.

It's pretty essential in TAW in my opinion. Trying to spot things in that sea of noise is almost impossible.
e.g. spotting odins sneaking round the map, getting timing on progress of superweapons from a scout.
Particularly important for air to notice when there are juicy targets in the open. Or where AA is to avoid... Or where to aim impalers to kill shields, etc, etc.

its been very useful, especially for remembering where targets like nuke silo and singularities are.