sudo is not simply a tool to give admin privileges, but a tool to manage elevated permissions or run commands in a different users context.
These things become a lot more relevant once you use the tools professionally. In a well configured system you are only allowed to run the things you are explicitly allowed.
To be completely honest sudo is basically pointless in a single user context. There is almost no reason to even have it installed. It makes dealing with different environments easier though.
Anyway as I said it does not matter in many cases if you are the systems administrator. On the other hand there is also no benefit in getting used to bad practices in case you have to unlearn them later.
One more thing: what you suggest with chroot is one of the very reasons why you should not do that. You might have handed over the keys to break out of chroot. It is a well known vector which boils down to never run anything as root in a chroot environment.