I'm am curious how it feels scummy, especially in the information age with the world's knowledge available at your fingertips. Seriously, it's 4 clicks, to select the word Calendly, right click, and search Google.

Not to make it personly, but eg, you spent zero space in your comment defining the meaning of the word "scummy". Adding a definition of the word scummy would, from an abstract angle, raise the information content of your comment. It doesn't seem scummy (at least to me) that you assumed all readers would know what that word means, even considering that readers here may not have English as their first language, and thus might NOT know what the word means. At some level, we just accept that people know things, sometimes unevenly, and it's not at all 'scummy' to withhold 'known' information.

The other thing here is that there's a difference between information amount, and information value - and there's an unappreciated value in NOT having something. The principle of "less is more" holds here. Calendly or this clone doesn't explain everything. It doesn't talk about what a Computer is, or what the Internet is or the history of APIs.