[fulafel]

I seem to have struck a nerve!

While there may be some things that can come for free with microservices (and not moduliths), your mentioned ones don't sound convincing. Blue-green deployments and gradual rollouts can be done with modulith and can't think of any reason that would be harder than with microservices (part of your running instances can run with a different version of module X). The coupling can be just as loose as with microservices.