Totally agree with this! Being "kindly honest" is way better than being "brutally honest". Being honest and direct is important of course. I have often found that delivering constructive criticism in the so-called sandwich manner often obfuscates the message, so delivering it directly is much better. However, being kind to the receiver of the feedback by having empathy for them and supporting them as they process that feedback will help land that message far more effectively than being "brutal" about it.