To be fair this is a very simplistic project just to get the 2-way chat working. There are no fallbacks for anything that doesn't work correctly. There are also numerous edge cases especially iOS and Safari that would add 1,000 more lines of code to properly account for.

Not too mention all the features that people actually want like muting, toggle video, noise detection/cancellation.

So yeah, setting up a P2P video chat in 2021 is somewhat easy. Until it's not.