Nope. Part 2 is significantly better in every possible way for me, be it characters, themes, story, art, animation, fights, etc. It elevated the series from a show that I really liked and one of my favorites, to show that I absolutely love and is my favorite ever.
Both are 10/10 but Shippuden > Naruto
In the end they are the same series anyway, the nostalgia and sheep mentality affect some people more than others.