Er... that's a simple, widely accepted and understood standard, with a broad set of tooling that can detect and auto-correct it. Crucially, it's something that
doesn't really matter. Therefore, because it's, in Ruby world, the norm, the great thing is that we can, by default, just accept that norm, never think about it again, and get on with our day.
Bikeshedding, on the other hand, is taking a contrarian stance and deliberately arguing over stuff that really doesn't matter so that we spend time and energy arguing over that instead of over the code itself and what it's trying to achieve...