The point is more: Crunchyroll chooses to pay the sub company (Israeli based) to provide them with a service. The company pays taxes to the Israeli government. So the flow of money becomes:

Subscriber pays Crunchyroll Crunchyroll pays sub company Sub company pays taxes to Israeli government

If I don’t want my dollars to go towards the Israeli government even in a small scale, I don’t pay Crunchyroll.

As one person, it isn’t much, but multiply that by a million subs and now you’re sending a message