I’m not even sure if there is an issue. I’ve been perusing Meta for a couple of months now and clicked on avatars… three times? Maybe fivish. Tops.
Even if someone had a keen interest in everybody else’s biography, there’s no reason to click the same user’s avatar ten times in a row. In fact, caching the data means that our hypothetical stalker would miss out on any new badges the watched user gets unless they clear the app-level cache by way of refreshing the entire page.