I really wish Apple would offer a pin option on macos. For this reason, precisely. Either that, or an option to automatically disable touchid after a short amount of time (eg an hour or if my phone doesn't connect to the laptop)
You can setup a separated account with a long password on MacOS and remove your user account from accounts that can unlock FileVault. Then you can change your account to use a short password. You can also change various settings regarding how long Mac has to sleep before requiring to unlock FileVault.
With that setup on boot or after a long sleep one first must log in into an account with longer password. Then one logs out of that and switches to the primary account with a short password.
As another alternative, rather than using Touch ID you can setup a Yubikey or similar hardware key for login to macOS. Then your login does indeed become a PIN with 3 tries before lockout. That plus a complex password is pretty convenient but not biometric. It's what I've done for a long time on my desktop devices.
PIN numbers are easier to remember. Remember, 99% of the population does not care about defense against state actors, just stopping nosy co-workers or family members from looking at their stuff. The next group (which I would include myself in) is concerned about theft (both physical and remote), where someone can get "unlimited" access to your machine and may be able to defeat a short PIN but is unlikely to beat a strong password. If you are in the realm of defending against state actors, then that is something you have to take multiple steps to ensure, and a single slip-up will tank your operation (like with this lady).
My guess is they want to have a PIN as a short-term credential analogous to the Touch ID, that is, it only works for X hours per password auth before needing password auth again, and then you only get X tries on the PIN before it either locks the PIN out and you need the full password to reactivate it (or I guess it could wipe the laptop à la iPhone).
what im saying is that i dont want to type in a long ass password all the time
and biometrics have "legal problems" as stated above
a pin or allowing touchid to automatically be disabled after a period of time or computer movement ("please enter password to login") would be greatly appreciated