You misunderstand me
There are much better captive portal systems out there that don’t intercept HTTPS, but they work when a user tries to go to a HTTPS URL because they have detection mechanisms in place. They get a graceful interruption which is prompted on the browser or on the OS saying along the lines of “you need to go here to sign on first”. Whereas with MikroTik it either flat out fails, or if you enable HTTPS intercept gives a certificate warning about the users data being stolen, both are very bad