It has nothing to do with the vacuum brand - so enough with that. The fact is the vacuum is too new to have parts for it available yet. Hoover, Maytag, Eureka, Sebo, Riccar all do the same thing.
Also you can take any of those tiny parts to a company that does 3D plastic printing and have a new part made from digitally scanning the old one, so you don't even need to care if the company supplies OEM parts anymore. You can have any part machined out now with a 3D printer or CNC machine - you can even do it yourself if you wanna make a business out of it and purchase all the tools and machine. Gotta think outside the box. Just like any old car it takes thought and a strategy plan to keep it maintained and running, because the manufacturer won't.