The Barrington declaration has been signed by many people. Who are they all then? Are they all discredited scientists?
I am not sure what is meant by discredited? The original declaration was signed by 3 main signatories and about 32 secondary signatories. The 3 main signatories are all infectious disease academics, but many of the secondary signatories are not (eg Sikora, who is an oncologist). The declaration was signed online by thousands of other people, some clearly with fake/ joke names, others may indeed be who they say they are, although many of these are not infectious disease experts, some claim to be reflexologists, homeopaths etc.
Therefore it's misleading for the media to report this as being signed by "thousands of top scientists".
The main issue is that they advocate a policy of allowing young people and non vulnerable people to get back to normal while sheltering those who are more vulnerable. Apart from possible ethical/ moral issues with this approach they fail to address a number of the potential practical issues of this approach or provide clear evidence of exactly how it would work.
There is nothing wrong with having a debate about how to proceed, but any alternative approach needs to be evidence based and have support from people with relevant expertise.