That would be oversimplifying things: DLNA is an inherently flawed protocol – there is currently no way to implement it while maintaining the Roon quality standards we know and love. See the recent (3/16) comments by @brian in this thread:
While I do appreciate the convenience supporting DLNA in one way or another would offer to owners of DLNA devices, this seems to be a case of skating where the puck is going to be – instead of where it was years ago.