i understand what you're saying, but personally wouldn't make a point of publicly announcing why I was leaving a job. I've worked for the same company for 49 years but if they changed policies in a different direction, I wouldn't publicly condemn them but would go somewhere that had similar philosophies to me.
As for reviews, I do give reviews for products to warn people off from bad products and to recommend good ones. I wouldn't however do that in this forum. It is primarily a discussion forum for Evernote users and not very likely a place where potential users would be looking for reviews.