Players could be a lot more helpful by being more directly relevant and tactful in their advice, sure, but to treat any critique or request as harassment or any information which might inform someone of their chances to improve as incendiary only simplifies the above tiers into "those who can" and "those who can't", with as little fluidity as possible between the two. And that's no favorable state for the game, or indeed any MMO.
The sad truth is, tools like meters, raidio, etc, will be abused. We know this happens. You cant downplay the social negatives of such tools because it is actually the main reason to not have them.