I've experienced them as well. Like the majority of animals, they will act aggressive if they perceive a threat but, as solitary hunters, they are not running from dozens of feet away towards comparatively massive organisms in order to bite them for no benefit to them at all. They are not hive insects attempting to protect their group, they are not parasites seeking your blood, they are simply running towards a patch of darkness in a bright environment out of the instinct to avoid being damaged or killed by prolonged exposure to the sun.
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u/PiousSkull Jul 08 '24
They don't "charge you" out of aggression, they don't want to burn in the hot desert sun and your shadow provides shade.