It's good to read some critical analysis of organized labor. The article is correct when it says Labor Notes and Jacobin tend to uncritically regurgitate the reform caucus' line whether it's in power or not. Yet somehow these outlets remain on the forefront of labor reporting.
The left in the US desperately needs to engage with the labor movement and people as workers. Aside from some Trotskyist groups (who seem to oppose the union establishment more because of perceived "Stalinism" than actual critique) the major orgs fail to do this and they just tail the unions and all that is left is some liberal reform efforts in the unions loosely tied to DSA who end up, like DSA, supporting opportunists and sellouts. Without going to the masses as workers the left can never lead them in struggle and we'll continue to just be citizens waving signs at protests. Without understanding the intricacies existing labor movement we will only lead them into capture by the opportunist collaborators. The left must thoroughly understand how to do both if it wants to be effective.