Nope, not really. It works, but it’s not an ‘official’ Sonic Pi technique
There are a bunch of people that use this idea - whether it’s common is harder to answer
I’d say at least that it’s popular with folks that want to work with a more visual style of pattern representation.
Well, there’s no right or wrong here… it comes down to personal preference!
There are a handful of interesting ways based on the same idea that other folks have used to represent grid patterns - here’s a few more:
