An artist is not responsible for the confidence of strangers on the internet that they don’t know. If an artist passively producing and displaying their work has such a profound impact on your self-confidence, (and I’m using “you” in the general here), it is wholly your problem and you should deal with it on your own terms.
No one should ever burden a creator that they don’t know– or even a creator that they do know– with their own self doubt in the context of that artist’s art. If you want to talk about it, say “Hey, I really like your art, and I really like how you do [x]. I think it’s weak in my own work. Do you have any tips or resources?”