I always give my honest opinion without any filters, while being respectful of course. However, I find that most people who claim to be open to feedback or communication are not really so. They prefer feedback that reinforces their own views, with only minor differences. This creates an echo chamber that benefits no one, either at personal or professional levels. You can see an example of this on LinkedIn, where overly positive and celebratory comments, along with (sometimes fake) inspirational stories, reflect this mindset.