Yes if you do unsafe things you can be fast. There is a hilarious open issue that google refuses to fix - critical information required to boot is written to a part that is battery backed. So if you have your pixel in developer mode, and have installed linux on it, just close the screen and and let your battery drain to zero - your pixel will become non bootable. All of this because storing this information in TPM where it would be persistent would "slow" down the boot. Speaking from experience - my pixel has lost data three times because of this.