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by Retr0id 411 days ago
A single hindi character, yes. But they also mention that only ~25% of hindi characters use combining marks.
1 comments

Most of them are vowels. They're pretty common. (Also, I feel like you of all people would understand the issues with "only 25% of the time this happens, therefore surprising behavior at the edges is unlikely to happen".)
That's why you have a limit on both.