what's been bothering me with competitions is when people expect or ask spectators or others to 'be quiet' while someone is solving (mostly bld but the idea applies to this thread). if you're a top level cuber then you need to work through the distraction.
I disagree. I think it's the organizer's responsibility (even see
7e) to try to keep things even. Something like the finals at US Nationals is significant enough to warrant some attention to that.
However, I agree that it's the competitor's responsibility to try to get the silence they want if they really care for it, e.g. by telling the organizers if they feel unfairly distracted. Retroactive complaints can only be taken as suggestions for future events. And that's what Ravi is doing, anyhow.
And of course, the competitor should make sure to start when they're comfortable with it. Myself, even though I felt a pressure to start my solve and not delay the competition, but I decided to take my time to relax before every solve, and did well in the finals.