This could very well work and it could even give an added boost to labor union efforts that aren't tied to the AFL-CIO.
Of course, the AFL-CIO, while turning more to the "left" in recent years (it was called the "AFL-CIA" because many CIA and other intelligence agents had infiltrated the offshore organizations in other countries, at the very least), is still very much a "reformist" organization in terms of politics, though it is not as "anti-communist" as it used to be (the anti-communist legislation is still there by federal law, I think). The Teamsters are known for being the "most radical" of the unions and the more independent ones. They also get the most flack.
I know people that know Teamster people and they aren't afraid to get rough and dirty when needed; I daresay they may be more "militant" than even the current IWW in some cases, though I would prefer joining the IWW despite the syndicalist bent of the organization.
For those that don't know, this resolution comes on top of a lot of labor battles and fights that have started in the 2010s and have extended even more with the onset 2020 to 2021 so I'm quite hopeful that the labor movement will be a bit stronger than they were before.
But we shall see...