It is amazing how inflexible and inattentive Microsoft can be. When they "simplified" Skype, removing a ton of useful features, I thought, "Oh well, they'll add them back based on user feedback." Boy was I wrong.
Is it really THAT HARD to add an option to your settings menu or simply a "make this my default" checkbox next to the existing slider on the Join page? It's quite a statement about the Tools and Architecture Microsoft used for Teams if this can't be done in half an hour.
I remember some book in the eighties that gushed about Microsoft's advanced quality control: Developers handed floppy disks through a window and another team inspected and applied the changes. GUYS! REPLACE THE WINDOW!