It’s not as big of an issue as it might seem. While you might hear about it online, I’ve never encountered someone who genuinely fixates on height in person.
This could be a form of avoidance. Sometimes, people might lie or exaggerate to steer clear of conflict, rejection, or negative judgment. This behavior is particularly common among those who’ve experienced trauma and become hyper-vigilant about how others perceive them. Past negative experiences might have created a narrative where you felt undesired or unloved, leading to concerns about things like height, even though that might not be the true source of the problem.
If it’s a common thing, maybe talk to a professional, but one-offs are fine. Don’t carry someone else’s baggage.
Edit:
In relationships and social interactions, such tendencies might arise as a way to control the narrative and feel safer in interpersonal dynamics.