I think it somewhat strengthens the rest of the work.
This is clearly not the answer the author wanted to find. And the bit about average number of days of life lost was a desperate attempt to hold on to his previous conclusion, before he looked at the numbers, that lockdowns were authoritarian overreactions.
I don't think it's fundamentally wrong to measure healthcare effects with numerical measures like QALY, but it's obviously looks even worse in the context of a big conspiracy theory about COVID.
Researchers investigating QALY impacts of their proposed treatments, fair enough. Philosophical Trolley problems, sure. Someone making a political point about freedom being worth killing people, where 'freedom' seems to mostly involve ignoring sensible medical advice, is less tasteful.
On the topic of total lockdowns, I thought Australia managed to keep a relatively normal life because they had a lockdown on people arriving? So they had less authoritarian stuff than a government that just let it in, could be wrong though, just how I rememebered it.