This doesn’t have to be either a conspiracy theory or dismissive complacency. We do live in a just in time mode of production. Supermarkets no longer own their own cold storage facilities. Sold them off years ago. Hostile actors could (and have) negatively impact the UK.
If possible, it is sensible to have additional supplies. I used to live in a place where weather was sometimes unpredictable. We had basic supplies in case of losing electricity etc. Currently the UK govt is advising us to stock up if possible, granted this is not possible for those on limited income or with limited space. But for those who can, why wouldn’t you take govt advice? It would help protect against panic hoarding if our supply chains were disrupted for a few days.
Several hacks attributed to (or partly blamed on) Russia have risked real-world harm to communities and populations. Poland’s energy grid was targeted with computer-destroying malware late last year, as was a Swedish thermal plant
Earlier this year, Russian hackers targeted Poland’s water treatment plants,
Iranian hackers targeted over a hundred water providers in the US over the summer. This included privately owned water utilities, which remain a soft target as they often lack basic funding and cybersecurity protections.
US planes involved in the Iran conflict are based in the UK. God knows our private water companies can’t even function properly now let alone if there was a targeted attack. Just ask the people of Kent.
Don’t all of these occurrences suggest some preparation is sensible?