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.
Exactly. Purchasing with a guest login works fine for most shops here.
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.
