That link mentions a dispute between 12 unions and 6 rail companies one of which is amongst the dozens of companies owned by Berkshire, run by Buffett. I see no mention of Buffett personally getting involved?
Ms. Farmer is the CEO of BNSF Railway[1], she is the one “directly running it”.
Moreover, Berkshire/Buffet is notorious for _not_ micro-managing, for letting its subsidiaires enjoy greater autonomy than they would in an usual conglomerate.
Not sarcasm.