Strongly disagree. It might be unattractive to SOME, but it's probably attractive to the people they are filtering for, who (among other things):
- Are proven to be able to build a business
- Probably have the cash to actually work for equity INDEFINITELY. Most people have a very finite amount of time they can work for equity before they start getting hungry and have to pick up a day job or some consulting work.
- Probably don't need startup education... i.e. they know about the highs, the lows, the shifting landscapes, etc.
- Aren't currently deeply engaged with another project.
Personally, I'm still iffy on the "founder personal ad", whatever the filter. It's like advertising for a wife... I think it'd be better to advertise that you're interested in "dating" and seeing where it leads. But if you're going to go this route, veteran founders with a track record seems like an obvious filter.