I get your point but it’s one in which will rarely, if at ever, happen. The kinds of skills we’ll miss are likely to be quite specific and with only focusing the points to get you in on areas we are short, there will be a tangible difference anyway.
I’m also not particularly keen on describing concerns over immigration as “knuckle dragging”. We had 13 years of New Labour encouraging as much immigration as possible into the country, no matter the skills and it’s resulted in some communities changing drastically, our infrastructure and housing being heavily burdened and a lack of integration in some areas.
Being concerned with the above doesn’t make someone unevolved.
Anyway as I say, being specific on what skills to you need, within a points system, is going to massively reduce the 100,000’s that come net per year now.