Why flash looks great, but should be used with care (or not at all)

I just ran across this article "Don't Use Flash this way, or how to ruin your site with flash". Not only do I agree with all of her points, but I'll caution in a few other areas too.

If you design your site in Flash, you're forever at the mercy of the designer. You MUST have the source file to ever make edits and that will need to be done by someone who knows Flash, owns the version it was created in, etc. I currently have this nightmare with a client and I'm really hoping they don't have to completely rebuild their site.

Search engines can't find you - unless the person who designs it really knows what they're doing. However, in my experience, most Flash designers are artists and not web people or they wouldn't do an entire site in Flash anyway.

Also, the use of Flash usually doubles the cost of your site - it looks good, but does it look THAT good?