You don’t have to worry about undercooking like you do with most other meats and most steak cuts will be delicious anywhere from 11-130 (if you cook a filet to 130, it won’t be the best but it’ll still be good) and some can go even higher
It’s not like poultry where the range where it’s “good” is very small. A 170 chicken breast is almost inedible and 160 is not safe…
This is why sous vide is such a popular way to cook chicken. You can hold a breast at 145 for hours trivially.
In particular, I use 135F for 90 minutes (75 minimum recommended) to pasteurize eggs that I am going to be putting into something that asks for "raw" eggs (egg nog, mayonnaise, etc.) that I will serve to other people (if it's just for myself, I'll probably just be lazy and use the raw egg). So far, nobody has noticed any difference from "raw".
165 is a rough rule of thumb, not some magic number like the boiling point of water at 1 bar or something.