Microsoft Teams already is already terrible UX, we have nowhere to go but up. Perhaps you are unaware, and if so, you should be thankful you don’t have to lose time using it. There are objectively better solutions available.
I too hate Microsoft teams but it can always get worse, you have no idea.
Matrix is so much worse than Team it will make your head spin. It suffers from design by committee to an unbelievable extent, and its various end-to-end security features are wonderful from a privacy standpoint but make things much much more complicated.