Yes, waiting is the only option I guess. But it would be nice to have some more information about why/how this happened.
As in that thread, these are websites I have visited many times before without a captcha, so it is definitely not a reconfiguration of the security, something else must have changed, namely how cloudfare treats my IP. Which end is responsible is the question, and while it does seem unlikely that CF would cause this, I cant think of any reason that my IP would suddenly be seen as malicious (as confirmed by Project Honeypot). I will check all devices on my network for malware.