Of course if shortages do start, they will impact on people.
Some of whom we rely on to do essential jobs.
Now I am as worried about the impact this might have on vloggers and instagram influencers as anyone else. But nurses, doctors, firemen, policeman will all need food. And they can't do their job if they are worried about their families.
More important are the people who maintain infrastructure. In particular power, water and sewage. Because no amount of stockpiling into that extra freezer will count for anything if - or when - the power goes.
If Russia were planning a land invasion of the UK, they wouldn't really face much resistance, since the UK is slowly turning into an English speaking cousin to the Ukraine.