Hey vexcaustic, author of the article here. I agree, sometimes implementing OAuth2 can be rough. We promote it at FusionAuth because OAuth2 is standardized and

Hey vexcaustic, author of the article here. I agree, sometimes implementing OAuth2 can be rough. We promote it at FusionAuth because OAuth2 is standardized and secure, and has been tested in lots of different scenarios. I took a look at kratos, it looks sweet, thanks for the link. We've had some FusionAuth users use Ory OathKeeper with FusionAuth too. It is interesting to see the different solutions for user management and login security that are being developed.