It's a very different medium which is why is presents a valuable feedback loop. It presents a rare opportunity to build the skill of making a strong argument, without putting your reputation at stake.

In my work I'm able to make a convincing argument as to why a given architecture is the right way to do it, why a given tool isn't worth using, etc. This allows me to participate in high-level design discussions and be a major contributor to them, even though I have relatively little experience. I attribute that almost entirely to my experience as an internet commenter, as odd as that sounds.