A chord is a collection of tones played together.
A guitar is just a collection of strings that can be tuned to anything.
"Standard tuning" as far as I have been able to tell in my research, has no basis as being superior or inferior to any possible tuning.
By tuning a guitar to notes that all sound harmonious together, one is creating what is typically called an "open" tuning. It is helpful for many things, including writing songs, using only barre chords to create melodies, and for playing along without learning or memorizing complex chord shapes.
Consider it like this: you have a xylophone with 24 tone bars. Each one makes a different tone, and you can pick any six of the 24 you want. You grab 6 that sound nice together and you put them in front of you. This is just like tuning the guitar to an "alternate" tuning. You have full control over the intervals between notes, and this is a major turning point in learning and mastering Stringed Instruments in general.
If you wish to get very skilled at this, tune one string to a decent tension, and then play/strum simultaneously the current string and a new one. Keep gently changing the tuning of the second string until you get a harmonious resonance. Basically, going from tuning one string at a time to tuning two strings at a time. This will be of value for learning and mastering what is known as the interval.
Don't be upset when you snap a string. Tuning too quickly can make the string brittle at a point, and all guitar strings are destined to eventually break. In your path to Stringed Instrument mastery, you'll break many strings. Perfectly natural.