Yeah I have that first issue exactly. While the touch pad is a fun addition, it's annoying when accidentally triggered. Might be good if they let you lock and unlock the remove by giving it a little shake.

I also accidentally hit the Siri button, but it's enabled here so it just triggers the Siri tutorial overlay. Which is less annoying than what you experience.

On keyboard input, that's probably the only place where a smartphone becomes valuable. The old Apple TV remote iOS app was good for entering usernames, passwords and search terms.