[logicallee]

it's interesting that you state in point 2 that the dev is "probably getting paid above market wage" - because normally, if someone is PROBABLY getting paid X then X is not above market rate: x is market rate. (Another way to state 'market rate' is 'is probably getting paid x').

It would be like saying that listing a used iPhone on eBay will probably fetch more than its market price on eBay. It kind of doesn't make any sense at all.

However, it certainly can make sense if you define "market rate" more broadly than the amount that ideal devs are themselves earning. If you define market rate as the rate for all devs, then the ideal dev may be making more. So what this really means is that ideal candidates have a much higher market rate than the general market rate.

If this is the case, then advertising that much-higher market rate will very possibly flood the advertiser with applications from average devs (the broader market).

But if this segmentation isn't what you mean, then it's very hard to interpret your point 2, and I would like you to expand on it.