Baseless speculation, but I imagine that many of those who dislike criticizing him arent the type of people who understand striving for excellence and wanting better.
Quoted nuelleduterte's tweet:
Why do I keep pointing out Digong and company’s shortcomings? Because people need to know this isn’t, and should never be considered, good leadership. The rest of us are all expected to strive for excellence in our fields and they’re not? Screw that.