The article is quite clear: they don't intend to unite to strengthen their bargaining power. "Arranged as a members-only union, the new organization won’t seek

The article is quite clear: they don't intend to unite to strengthen their bargaining power. "Arranged as a members-only union, the new organization won’t seek collective bargaining rights to negotiate a new contract with the company" It's not really a union. It's a political faction that calls itself a union to benefit from laws protecting union members from being fired for "organising". The assumption was that unions would "organise" to benefit their workers via better pay or conditions, but that isn't the case here.