Androsexual is a term with several possible definitions.
First, is the exclusive attraction to men. This means that heterosexual women, gay men, and non-binary individuals attracted to men can be considered androsexuals, another word for this definition is masexual.
Thirdly, is the attraction to "male anatomy" regardless of whether that individual identifies as male, however this definition is sometimes considered transphobic as it reduces individuals to their genitals.
This identity is sometimes referred to as "androphilia," however this term is outdated.
The term was possibly made with non-binary or genderqueer individuals in mind. However, many non-binary individuals prefer terms like minsexual, mascic, or masexual to describe this attraction, because androsexual has no agreed upon definition, which can make it's usage confusing, and it can have unfavorable connotations. The term androsexual is commonly used by transphobes as a reason to exclude trans men because they are only attracted to "male anatomy" or "real men". Under this definition it reduces individuals to their genitalia, putting cis men and pre-surgery trans women in the same group because they have "male anatomy". The prefix andro- means "man" or "male," which may imply that one sees "male anatomy" and being a man as interchangeable.
An alternate flag was created on by ThatOneKnows. The blue stripe in the middle represents those of the male gender ;The green and purple stripes at the end represent non-binary individuals who present masculinity; The transitioning stripes to the central blue stripe represent trans men.