You're right, it's not a platitude, but it's entirely performative and diminishes actual labor struggles.
I don't think it actually, meaningfully diminishes "actual labor struggles". The working class is not going to have a harder time organizing because some tech workers did it first.
Unions have won every cultural battle in the US. The only reason union membership declined is that virtually every industry that they got a hold of went bankrupt or severely contracted. A notable exception is Hollywood, and that's only because the nature of movie projects, which are time-limited, reduces the leverage of unionized workers.
In the government, where taxpayers pay for growing inefficiency, unions have only grown in strength.
I can speak from experience that leftist groups who otherwise hate the tech industry do celebrate tech unions.