Aside from the option of being paid in turnips, I personally find asking for a timezone questionable. Someone's timezone doesn't say much of anything about their availability. For example, it's 1:30 in the morning for me right now, and I'm winding down for the day. Anyone who expected to interact with me before noon my time would be bothering me before I'm properly functioning, and dealing with a seriously grumpy person. Asking for timezone instead of available hours feels like it could lead to discrimination based on location, either consciously or not.

Still, I wish the best of luck to all applying! I don't think that this is a bad company, just that perhaps that they should put a little more consideration into future applications.