Но, копаясь в гитхабе, наткнулся на прекрасное. Вот это чувак прям резюмировал всю нашу боль:
https://github.com/google/recaptcha/issues/286
This is honestly the WORST fucking thing imaginable. According to it I am robot most of the fucking time. Not only it uses terrible images (how the fuck do I determine what is a storefront when I see kanji crap etc) it fails almost all the time, it won't detect corner cases like (like does fucking pedestrian traffic light apply? Do you select tile if just part of fucking thing is in the view?). It's absolutely fucking retarded. I would rather have fucking bots posting spam everywhere but this shit. Delete this google and start again.
(Если честно, я пытался ответить на вопрос, можно ли на гитхабе ругаться матом, и, похоже, ответ - можно! :)).