I guess it depends on why you consider Michael Moore to be a bad film maker. Quite a few of Michael Moore's critics dislike his films because of his political positions, not because of his film making techniques. If you believe his political positions have no merit, one will disagree with the presentation of them.
Adam Curtis does have political opinions about society. If opinionated films bother you, and particularly ones that lean left or are not decidedly right leaning, it may be worth skipping Adam Curtis' work.
I'm fine with opinionated filmmaking, and I even agree with much of Moore's messages, but at more moments than I'm comfortable with I find Moore's filmmaking to be dishonest, insincere and deceptive. Very well edited and engaging though, so I wish I could like him.
Adam Curtis does have political opinions about society. If opinionated films bother you, and particularly ones that lean left or are not decidedly right leaning, it may be worth skipping Adam Curtis' work.