I'm sorry someone in a different discussion thread hurt your feelings. Can you share the link so we have context for the conversation?
Are you talking about songs you wrote yourself, or cover songs? For your own original songs, nothing wrong with playing root notes, if that's what sounds best. It's your song!
For cover songs, are you saying that, instead of actually learning the real bass line, you are making up your own bass line instead? If so, I don't think that's a sign of "incompetence." But in the long run, it is good to train up your skill to learn the bass lines correctly.