It is true that older people are more susceptible to severe outcomes, but you have focused on deaths, when the report you're quoting from is mainly focused on hospitalisation. The unvaccinated add around 30 years to their age by dint of being unvaccinated, so someone 35 unvaccinated acquires the age profile of someone 68 and vaccinated or thereabouts. If someone 35 gets taken to hospital they generally survive at that age - so they don't show in the death rates but the experience tends to be life changing, and not in a good way.

Younger people - both vaccinated and unvaccinated - are ending up in hosptial in far greater numbers due to COVID than is usual in normal times, with the unvaccinated experiencing worst outcomes. When I first worked the intensive care units, back in January, everyone was older than me, now almost all are younger than me. On the week 40 surveillance, someone aged 35 has 1 chance in 50,000 of being hospitalised in the course of a month, if vaccinated, about the same as baseline pre COVID. The unvaccinated multiply their risk of this by a factor of 6.5 - way over usual levels and the same as vaccinated people aged 68. If we look at ICU risk, the multiplied increase is about 9 or 10 times compared to the vaccinated. If we consider years lost via premature deaths, or indeed economic impact, I can make the case that it would have been better to vaccinate people in their 30s before some older cohorts. Around about 1 person a day aged 30 to 39 is currently dying from COVID in the UK, 80% of them are unvaccinated when 30% of that age group in the wider population is not yet vaccinated. We strongly suspect that almost all of those deaths in the unvaccinated were avoidable. You can't necessarily say that of people aged 68, vaccinated or unvaccinated.

That's the UK situation, but just look at the USA situation if you want to really see what happens to people under 50 who elect not to receive a safe and effective vaccine.