Does Apple not allow multiple timers for hardware reasons?

Hi HN, hope you can settle this new years debate for me.

Why do iPhones still only allow one timer? My friend believes it’s due to hardware limitations (only one interrupt based timer, I guess?) but I can’t see that — the watch and TV have the same internals and support multiple, although that means it could be something external.

My theory is the same as why there’s no calculator on the iPad, Apple felt like it