If this keeps working consistently it will be a brilliant add-on.

A couple of pointers if you are struggling to get this working:
If you get the error "Cannot contact reCAPTCHA. Check your connection and try again" - You need to enable user input in the settings and install the buster-client.

If you then get an issue whereby the mouse goes to the wrong place and get strange behaviours: disabling privacy.resistFingerprinting fixed it for me.

This is also the reason this is only 4* as I had to do quite a few other things to actually get it working and search all the closed issues. Worth it for me though because I dislike reCAPTCHA so much. Thanks Armin!