You are correct in that Apple will not necessarily reply to a feedback submission - however, it is our understanding that all feedback is logged and passed to appropriate teams within Apple.
As for posting here, while the Apple Support Communities provide a platform through which individual contributors can both discuss issues and offer technical assistance to others, Apple’s representation is limited to (a) the Moderation Team who ensure that contributors comply with the Terms of Use that govern participation within ASC - and (b) the Community Specialists whose role is to provide a response to posts that have been unanswered by other participants.
Otherwise, Apple neither monitor nor participate in any forum discussions that are posted here.