It has nothing to do with travels and it has a lot of to do with aviation, as per my personal opinion.
It's your opinion and you're entitled to it, but I'm going to have to disagree in this case: The "markings" you are referring to are landside, and aside from the fact that they're at an airport they have nothing to do with aviation as an activity or field of study.
An equivalent question would be "Why do the barrier ropes at both Roosevelt Field Mall and Walt Whitman Shops say Simon Properties rather than the name of the specific mall?"
The airport-markings tag wasn't really intended for asking about landside markings: It's more intended for the airside markings on runways/taxiways/ramps/hangars/etc.
Some confusion about this is to be expected here since there was no tag wiki providing guidance. I have created one with examples of the kind of markings that tag is generally targeted at.
Regarding topicality and the possible existence of some off-topic questions which have not been closed please bear in mind that the existence of some off-topic questions does not provide justification for more off-topic questions: This is the classic "speeding defense" (But officer all those other cars were speeding too!), and it doesn't really hold up.