It can be both - Biden admin has objectively done more for workers than most American presidents AND it’s still not enough. Acknowledge both in criticism. Look at the auto workers Union president and see the more balanced approach there - hold his feet to the fire and reserve your endorsement, make them take some action to earn the endorsement, then don’t take the pressure off after giving it.
This just feels like anti labor press working to divide people that are overwhelmingly on the same side. Smalls isn’t trained for this work, he’s organically found himself in this position and he motivates people which is good, but it will always be easy for the machine to use his words against him as he’s not the classic polished, careful representative typically in that spot.