I assume you mean having to wait or hit Ctrl-D and manually start a shell?
Personally, in some ways I prefer it that way. I have two Chromebooks, and mostly use Crouton, but I've restored them back to factory state with a single keystroke several times, and it makes me confident that I can easily revert after messing with the OS.
EDIT:
Seems like a giant fuck you to the Linux community given how much Google has benefited from Linux(ChromeOS even runs on the Linux kernel) and they put out laptops that are more locked down than your average windows laptops? Pretty disappointing
That's pretty unfair, Google contributes upstream for both ChromeOS and Android, and from the start they allowed an easily accessible developer mode, while prioritizing the security and simplicity for normal consumers.