Hi
I will not contradict the MVP whom said that to you. However, I will point out that when products have been released in Beta form the posts placed in these boards. They did provide a lot of feedback which Microsoft listened to and shaped future products accordingly. You will also see Microsoft Support Advisors comment directly in these same boards to provide solutions, workarounds and assistance. They will also take any feedback on board and relay that on your behalf. There are various option to provide feedback from Email, Phone, Facebook, TechNet, Connect, Help pages, Product pages, within a program. Sometimes actual feedback options might be closed due to issues or ongoing improvements already being under taken, therefore it is better to close as the product you are about to comment on is about to change. However, there is still other option by sending email, phone, or just use Facebook and post on the relevant product page, Microsoft, Windows, Windows Phone, Office, OneDrive etc. etc.
Hope this helps
Have a great day!
Thanks!