So when will we get back to normal? After all the jabs and boosters were had because they promised this. There are millions of children under five years old who are terrified of standing too close to another human being, they even separate their Playmobil in the doll's house!! I don't think we have even the smallest inkling of the damage we are doing to the next generations mental health and ability to interact socially in a normal way.
So maybe your father and brother did catch COVID, but they at least did what was reasonable to protect the NHS from becoming overloaded again. If they have tested positive but have no symptoms more dangerous than a normal winter virus, then they isolate, avoid infecting others, and then get on with living their lives, hoping that they've just boosted their immunity to the virus and its next variant.
Living in perpetual fear inspires more pity from me than a vaccinated person who catches COVID but has few symptoms.Living entails taking calculated risks. If you ask an elderly person today who has had ALL their jabs and boosters if they want to continue going to their clubs and activities i.e taking those awful risks you're talking about, or sit at home, often alone if they've been widowed, protecting themselves from COVID, waiting to die of old age ALONE, guess what many would reply.... Quality over quantity wins every day!