I actually really like it when companies do this. Different people will access the same feature in different ways, from different places. Much like there are multiple ways to open a file in VSCode, it's not that the UI is poorly thought out, it's very well thought out and gives users multiple ways of doing a thing.
Two of those are just indicators of what playlist and song is playing, sort of like pwd, sure you can press them to pause but that's hidden functionality. The top and bottom pause buttons are for people who don't know about keyboard shortcuts and don't want to move their mouse all the way up or down the app.
Our product has a similar feature - several buttons in different places which do the same thing. Our UX designer explained that different users expect to find the button in different places, so they put it in all of them.