I wasn't criticizing people who use that language but I do think what you are describing is as idiosyncratic as what I was describing as what was needed for my own group's immersion. However, Aragorn or any fantasy hero of literature or film or comics, is more likely to say "We need to keep them out of that room!" rather than "We need someone to use their 'denial of area' ability over there!" That may or may not emulate actual trained warriors, but I don't care.
On the other hand this isn't contradictory.
Aragon thinks: We need to deny that area to the orcs
Aragorn says: Legolas, take overwatch and cover that area
Legolas says: I'm covering that area
Legolas' player: Puts down an overwatch marker to show where he's covering and he gets to shoot anyone trying to come through rather than lining up one shot.
Legolas' player says: Ultra overwatch area.
Legolas uses ultra overwatch rather than basic overwatch because he's such an expert with his bow. Someone armed with only a crossbow could set overwatch as a held action, but they would only ever get to shoot one orc rather than do ridiculous high-speed elf archery
Aragorn thinks: We need to prevent anyone crossing that 10' wide bridge
Mechanics say: fighters have a zone of control around them to prevent people doing a conga-line past
Aragorn thinks: Boromir's zone of control means he can guard the whole bridge
Aragorn says: Boromir. Onto that bridge. Guard it all.
Boromir's zone of control means that the orcs fight him rather than rush past to get the hobbits.
Most of these mechanics are trying to codify what veterans would try and do that's beyond just walking up to someone and hitting them.