My system admin senses are tingling...
Be careful with this command, it's a great and powerful one-liner but it has the potential to wipe out a LOT of content if it is used the wrong way. The "-Recurse" parameters are one part that will make this dangerous. Recurse (recursion) is a function that will essentially traverse the entire folder and file structure of a path when used like in the script above. So, the first part is getting a list of all the items within the local user's profile where Teams is storing all its cached files. That list of files is being fed in into the next command Remove-Item which also has a Recurse parameter applied. So put it all together and you have a command that will delete the entire contents of a single folder. Also, the files don't go into the Recycle Bin... so recovery may not be an option.
There are very few technology professionals who do not have a story about themselves or someone else who has done a recursive delete that went the wrong direction.