Why would people call some people call this behavior mental illness or obsession?

Is this type of trolling a mental illness? This person used another app to ask the same question 1,178 times and has asked many similar questions, just rewritten. The person will sometimes ask the same question every day, sometimes every hour, or even ask the same question 40 times in less than an hour, then stop for weeks or a few months, and keep repeating this pattern over and over. They been doing this since 2021 and now still doing this in 2025.

Why would people call some people call this behavior mental illness or obsession?
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