the grinch's misdeeds are:
-attempts to "steal christmas"
-lies to a child
-is mean to his dog
considering that the Whos do not care about the presents and decorations being removed, the actual negative impact of the first two is negligible.
no one other than the narrator (who only the grinch reacts to) actually harbors ill will towards the grinch in the text. the grinch is a figure who *believes* he is hated
in conclusion, maybe the grinch just needed an app to tell him to drink water
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