Depends, somewhat, on the age group. The reality is, the primary difference between little-kid soccer and big-boy/girl soccer is the physicality. Kids are, quite correctly, coached to NOT allow opponents to turn with the ball. Hence, tight, physical marking. As long as it doesn't cross a line, I'm fine with it.
That said, in my opinion, many of our state's officials call too many ticky-tack fouls in higher age-group matches.