I don’t feel ashamed of sharing my real skill on certain things that may be far away from experts. I keep learning things as they come or as I widen my comfort zone. I learn from my mistakes. I learn ‘a lot’ from my own answers in the support forums too, because my answers may be incomplete, inaccurate or just superficial at times.
Only those ‘flame others in the internet‘ need to be ashamed of themselves because it might affect them in many ways, including relationship with others and in scarcity of projects or money to survive.