You never have gone to a 3rd party to control any of these in BC. Not sure where you got this from?
You only have the options on the modules and the guides highlight settings, use cases and workings of them:
Are you referring to the module settings like here?
module_recaptcha | Business Catalyst Developers
You can see the options and what mode to set it to on the module.
Never meant to imply it could be done Liam .. just meant to reference the fact there are settings in the back end of the recaptcha tool where you could specify how strict the security settings were enforced (see screenshot below) and wondered if there was anything available like this in BC. I see there are settings in BC for captcha where the letters could be 'easy' or 'complex' and so wondered if that functionality was available for v2.
From your note, it seems it isn't.
That is if you get the code from the above and for google forms etc, that is not related to BC. If you check the links I posted you can see the available options.