Microsoft Teams. I am forced to use it (work) and it is missing really basic features that messenger software had in the 1990s like Push-To-Talk, real multi-window (even with the recent "pop-out" functionality), and its UI is all the worst modern trends. You cannot extend it or fix these issues (e.g. plugins, custom CSS styles, etc). Plus it is buggy, I keep not getting calls/messages/etc, and every time my computer…
Oh and the most insulting part is how they treat its users like children. You can use giphy to embed a gif but if you search for any “bad” words it says no results. Search for fuck, and it hides them. Everyone using it is an adult, why apply this conservative boomer “nO sWeARIng alLOweD”?
To top it off if you instead copy paste a giphy url it doesn’t embed that properly either!