Earlier quoted context omitted.
I'm confused about what you're fucking off. Would you prefer to schedule haircuts via a call or an anonymous online form? Being able to schedule appointments online is one of the big wins of modern life imo: it beats waiting around on hold and laboriously explaining to the receptionist how to spell my last name.
There are things that work anonymously (or at least pseudonymously) already: pizza delivery or hotel booking. It's not like the data presented at a random registration form has to reflect your government ID. Skipping the login step just saves the hassle, and preserves the win of being able to do things online.
In this specific case I was talking about it's even worse: I already have to click a link in the email (or answer an SMS) to confirm the appointment. It's ludicrous.