I have said as much to everyone up to the VP level, and provided detailed recommendations (I am a Sr Dev, but in prior jobs I successfully managed dev groups of 40+ people). The response I’ve gotten has been coaching on delivery (stop being so blunt) and crickets on any actual changes.
If a $30K a week consultant came in and made the same recommendations at VP level, they’d be prized for their directness, and people would be having fires lit under them to implement most of the changes. And the actual staff would benefit as much as the company.