It’s true up to a point for me
I live with leukaemia, which is very well controlled by drugs, and it’s quite likely that I am no more likely to catch something than the next person
But if I get something that causes symptoms, I have to ring in (or just go to A&E) as I am extremely high risk for neutropenic sepsis, and they will assess and do bloods (but probably give me IV ABs anyhow) - even if possibly Covid, I would be admitted under the haematology route.
I have flu jab as soon as it comes out, and have had both the term meningitis jab and the over65s pneumonia jab. I can never have a live vaccine again, and my DC get the flu jab, not the sniff as it sheds - not a risk for most people, but with a very wonky immune system I mustn’t be exposed to it in household level of contact
I know one person with leukaemia who died from a common cold
So yes it’s a worry always. But the background level of risk in ‘normal’ years is pale compared to a novel virus in pretty free circulation.
If I got it badly enough to need hospital (and blood cancer patients are admitted more readily than many others), 36% of us die. And the %age who have other serious but non-lethal complications is also several times higher than the general population
Women my age with blood cancers are one of the most over-represented groups for Covid ICU admissions