The key being "if it's true". The only 2 sites I've found making these claims are pretty blatant right wing sites with a vested interest in talking shit about strikes. Beyond that the actual claims in the article are contrasting any spending the WGA has done over the last several years against the current spending needed for the strikes, as if it's some kind of gotcha that the WGA was gasp! spending money but is now ASKING for money! It's not exactly apples to apples even if all their unsourced claims are true.
When there are objective evidence supplied by reputable sources, then I’d be inclined to believe it. As this is OANN and another poster linked NY Post, yeah this is garbage as usual.