Because a Company expecting a "walking set of tech keywords" is a terrible deal for everyone but charlatans.
It is terrible for inexperienced developers eager to learn on the job as is common in other industries or was in ours in the past.
It's terrible you're an experienced developer that is able to pick technologies quickly, or just wants a proper work-life balance.
It is terrible for developers who are deeply familiar with the technology but expect to work with a team of professionals, rather than with "walking set of tech keywords".
It is terrible for inexperienced developers eager to learn on the job as is common in other industries or was in ours in the past.
It's terrible you're an experienced developer that is able to pick technologies quickly, or just wants a proper work-life balance.
It is terrible for developers who are deeply familiar with the technology but expect to work with a team of professionals, rather than with "walking set of tech keywords".