This is very, very, very dangerous.

Occasionally, you misclassify a real user as a bot, and then your reputation is ruined forever.

The official Polish train schedules website did this recently, feeding incorrect departure and arrival times to IP addresses known for aggressive scraping, without taking CGNAT into account. People... have noticed[1].

[1] (Polish) https://zaufanatrzeciastrona.pl/post/kto-i-dlaczego-losuje-w...