if it's lobbying for one idea over another how is it not political? Moore is known to be left leaning and his movies are known to strongly push for leftist poli

if it's lobbying for one idea over another how is it not political? Moore is known to be left leaning and his movies are known to strongly push for leftist policies directly or indirectly for candidates. If he releases his "documentary" a month before an election it's pretty clear he means to influence the voters so how is that not really a political ad for the candidates for his favored party?