(Putting these quotes in reverse.)
Do you really think they are lacking the intelligence to weigh up all the factors and scrutinise research/evidence?
There's a few things here.
In raw intelligence terms, the situation is mixed. SAGE, SPI-B, etc. are very capable. Many ministers are, not all. It turns out Borris does not have an analytic, probing, mind. (To be clear, I'm not saying folk are 'stupid', but virology, epidemiology and stats are fields that are not accessible without quite some mental effort for many.)
Could they weigh things up? This is what politicians should be good at. But we found economic analysis missing. No matter where you stand on the importance of money, this should be weighed. Yet they avoided even having the information to weigh! What else was not weighed?
What of the research/evidence itself? Prior to Christmas, backbenchers revolted, and so many did because it emerged that SAGE modelled 'what they were told', without really looking broadly at other scenarios. Research/evidence isn't made by "the internet" —it has to be created by universities, labs, pharma companies, etc.. Turns out that the weigh of evidence we created was for scenarios that would be supportive of measures. No-one in an authority position seemed to have even though that was a problem.
It's funny, in a way, because you'd think it's the scientific complexity that'd make good decision making hard. But in the end it turns out to be the age-old "I thought you did it!?" / "No! I thought you did?!" fuxxup.
Does it really not make sense that the tens of thousands of BEST medical minds globally/WHO - have the consensus of opinion that vaccines, masks - and in an extreme/critical situation - lockdown - are our best defence?
They should be. And I do believe they can again be. We will learn from this.
But in order to learn, we must look back critically. Dismissing the question as unnecessary or unimportant is not going to help us learn.