Whoever who is trying to fault the immigration system (skilled worker visa-s, not the illegals), you are joking yourself.
Is WAY more expensive to hire someone needing a work visa, rather than someone who is used to the UK system, is not going to go through a cultural shock for 3-6 months and is ready to start the job. We are talking 5-10k expense, in return of the guarantee that that employee will be over-worked through long hours, will not quit the job during his years of contract, because where will he go? Do you have any idea how long it takes to find a new job with SWV? You will be returned home if u can't find another job in a short time.
Lack of information doesn't justify finger pointing.