You have a point but this kind of thing has come about before, whereby any agency posting virtually had to justify each and every post in one form or another. That’ll be about the time that they stopped posting if I recall correctly.
For those of us that do not have to hunt high and low for work that may seem not too much of an issue but for others the jobs posted here may well be of benefit. So I suggest that, unless an individual is interested in the work on offer, simply not replying might be the better form of approach, or as you suggest start another thread on the subject.
After all…. if the job is of interest people can always PM to ask for more details if they feel there are insufficient posted.
best regards
James Mc