I see workaholism as basically identical to emotional unavailability

Pretty sure workaholics don't see it that way. And that seems like a fairly inevitable conflict point if you're dating someone who works a lot. Your opinion seems clear, you don't want to date a workaholic.

Myself, I would probably have some of the same problems you have. Not sure if I'd want to be with someone who is routinely unavailable. But there it's a trade off, people need a job, I'm sure I'd tolerate it to a point. Not sure where that breaking point would be specifically. I've noticed people who are workaholics usually have a work hard phase then a play hard phase, where they spend a bunch of money and own a bunch of random toys. Even though they're usually only available like 3 days a month to use them. I'm not as much of a 'big splurge purchase' kind of person. So not sure that personality type would do well with me.