It's a fact that underlying conditions have the potential to aggravate/ complicate illnesses and possibly contribute to premature deaths.
I don't know why this gets twisted into the "value" of life.
I've lost close relatives in their 40s & 50s. Both had "underlying conditions" One had severe learning difficulties. He died younger than many of his peers, but few of them live long lives. They mentally and physically age rapidly when they get to what we normally consider "middle age". They are not "worth less" at all, but it's a mistake to pretend that they share average life expectancy.
My other relative had "lifestyle" diseases. People can live to an old age with them, but if they've manifested at a younger age, it becomes less likely that they'll live many decades with them.
"Underlying health conditions" is a vast grey area, but the reality is a huge proportion of the population is in poor health to some degree.
The government has presented much of its propaganda as a blanket risk. Healthy, young people should never have been terrified when the risks are very much in their favour and clearly so from very early on. Restrictions have often been an impediment to healthier living, forcing people into being sedentary, restricting exercise to a "daily", local walk and eliminating incidental activity from school runs/ work/ shopping etc. Stressed or stuck at home, alcohol consumption increased. Take-aways were one of the few treats avaliable throughout. The shielding advice should have been updated and eased months before August 2020. There was a window in 2020 when pressure on healthcare eased significantly, but access to it did not with thousands being far more vulnerable now than they ever needed to be.
It's not that people with "underlying health conditions" are less valuable as people, it's disingenuous messaging about the risks to different demographics and access to healthy lifestyles and health care that's been a major problem.