My own taxes are "relatively" simple. Mainly W2s, various 1099s, investments, schedule C, and deductions around kids. I don't know how good it is about finding credits, especially on a local/state level, but as I went through it basically asks you a ton of questions about your year and if it pertains to you if you want.
And btw, I agree it is ridiculous how complex they make this in general when they are clearly lobbied by interests to keep it too obtuse for general people.