I choose to read that as "neither party speaks to my situation" rather than the indifference being an accident. There are a lot of reasons to care with how politics affect, well, everything, but that doesn't mean parties are involving the masses. No, they're actually doing an excellent job alienating them.

And that's just the non-voters. The only reason people even vote is to make things less shitty, not because they feel particularly moved by either party, which proves how alienation affects even committed voters.