You're not the only one.
Now, as a skeptic myself, I say you don't have to really take much stock into what I'll say next, but multiple people I know who claim to be psychic (9), of different ages (18-56), if different religions/spirituality, all eerily said the exact same thing when I asked them (first jokingly, then out of curiosity) what they thought of Labubus.
And each one, first thing they said was "the creator made a deal with a demon". Not necessarily that the thing itself was evil (although they all got bad "vibes" from them), just that the popularity was a result of that, specifically.
I did inquire if they thought the same about previous fads (such as garbage pail kids) but they said no, just this one.
Now obviously correlation doesn't mean causation, and this sample size is tiny. I only thought it was a peculiar anecdote.
But, if there were to be a Faustian bargain to be had, fueling the climate and plastic pollution crisis via plastic figures sold in a gambling and predatory capitalistic manner does seem like something a demon would do lol.