Agreed. For most fast paced multiplayer games, UDP would be better. It depends on the specific use case though. TCP has some advantages when you need features like authentication and encryption because packets are guaranteed to be delivered in-order for the life of the connection; this feature is important for TLS block ciphers. With UDP, you may end up having to reinvent some features that are already offered by TCP and your solution might end up worse overall. So you have to find the balance between code simplicity and performance.

TCP can cover more use cases than UDP but for some use cases this will be at the expense of performance.