Auth is a massive pain across almost all Google products.

Just being able to send commands to my Nest thermostat (which I own, and is on the same LAN) involved creating a cloud account, a "project" (wtf is a project, I just want an API key damnit, this isn't JIRA), a billing account, enabling billing, enabling the billing account, creating another account somewhere else on some other Google site, doing through mountains of 2FA issues in the process where I had to tap "Yes" on another device instead of the device I was actually using, enabling the project in the other account, installing it, publishing it, paying $5 somewhere in between and I didn't understand exactly for what, ...

Why the hell can't I set my temperature with a simple "curl" command to the thermostat's LAN IP? At the most with a simple "Authentication: Bearer" header?