This is one of the downsides of digital media. The cost of posting B.S. online is almost $0, so there’s very little downside to inundating the internet with fake job postings, fake resumes, and fake ads.
Back in 2003 the company I was at annouced the place was closing. I found an ad in the paper (remember those) and the place was nearby but they did not exist. A co-worker told me companies do this to see if there is interest.