Common advice is that job posters put insane requirements on their posting because they don't really expect an entry level applicant to have 15 years experience in HTML5, Joomla, C++14, Bootstrap, Hypercard, Quechua, nuclear physics, and Go, just a little bit of exposure to half of them. It's not surprising that unreasonably underqualified people respond to job postings with unreasonably high expectations, and that all job postings end up not being taken seriously.