Similar to the dose making the poison - the thing that jumped out at me in this blog was the ratio of scraping to visits. Unless OP is scraping thousands of times a day I don't really think they're in the same class as the bots they are blocking.

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nickgray 4 hours ago | parent [-]

OP here: I'm not scraping thousands of times per day! Usually just a few times per year.

	▲	jader201 2 hours ago \| parent [-]
		But you could just be one of thousands of bots targeting the same sources you’re scraping.