RDS HA under a shared service account

I've found this post [https://www.reddit.com/r/WindowsServer/comments/1sdd5ng/comment/oelypku/](https://www.reddit.com/r/WindowsServer/comments/1sdd5ng/comment/oelypku/) where u/picklednull mentioned running RDS HA under a gMSA but I couldn't find any reference to it. I remember someone else saying a while ago that he got some insider information from MS support about it being added, in the process of phasing out NTLM.

Does anyone have more info? Can it actually be done?