I agree. "Makes scheduling collaborative instead of a nuisance." Isn't really a strong opinion.
Here's a strong opinion (though not a purple cow): "All scheduling should be done by phone with a physical person." Which is pretty much true for every medical office everywhere.
Here's a purple cow and strong opinion: "All scheduling should be done via blockchain." Since what we really need is an immutable record of meetings... There's no reason for this, but I'm sure it'll get attention (and funding).
I'm being cynical, but altogether agree with you. It's worth being different.