Mac OS does have the ability to read and write Blu-Ray data discs as that’s built into the Finder. The article you mentioned is one I’ve used and posted previously in another forum in regards to using tsMuxerGUI to utilize high definition video files to make a Blu-Ray video disc capable of playing in regular players as well as computer drives. That software is updated consistently as well as MakeMKV which I’ve used only a little since I don’t want to bother copying a lot of discs just to be on a server. It took me enough time over the years to rip my CD’s and digitize some records/tapes.
Finding good Blu-Ray authoring software for Mac is a different issue as there is not a decent piece of software like multiAVCHD which is for Windows. I have an old Windows laptop I’ve used to do the authoring and then bring the files to the Mac for disc burning. But since I decided to keep a VMWare Fusion Windows partition on my Mac, I will use that instead next time I need it. If you’re only placing one video file or movie without any menus on a Blu-Ray disc, then tsMuxerGUI is all you need. You will waste some of the disc space probably but single-sided Blu-Ray discs are not that expensive but double-sided are a bit more last time I checked.