Taking defense in depth measures like using https on the local network is "theatre" that "actively harms your organization's security"? That seems like an extreme opinion to me.
Picking some reasonable best practices like using https everywhere for the sake of maintaining a good security posture doesn't mean that you're "not doing risk analysis".
I have seen people disabling all cert validation in an application because SSL was simultaneously required and no proper CA was provided for internal things. The net effect was thus that even the traffic going to the internet was no longer validated.
These kind of risks are obvious, real, and extensively documented stuff. I can't imagine why anyone serious about improving security for everyone would want to downplay and ridicule it.
Turn on crypto, don’t be lazy