They're a non-issue up where I'm at, but generally from what I've seen traveling around and through word-of-mouth through comrades and contacts in the labor movement they tend to constantly flicker between being harmless to being union disruptors that gunk up our organizing with either focusing on pointless dumb shit, unfocused revolutionary sounding demands, or undermining and sabotaging labor unity through doing entryism during negotiations and either confusing the rank and file or attempting to hijack their cause.

Generally speaking the Communists I know that deal with them tend to simply poke holes in their paper-thin arguments whenever it's trying to push for revolutionary sounding demands or pointless dumb shit and leverage their communal ties to the workers they've worked alongside for periods longer than the trots. After all folks trust people they know and live alongside with and not some crank that walks in and out the door every time they gotta fight to improve their material conditions.