Thanks for the link. I'd never heard of this guy, and honestly did not follow the Skripal case closely, so given your description of his objections as "batshit crazy" I expected to just laugh them off, but now that I've started to read them they actually seem like pretty reasonable objections to me.
Maybe you have another link with objections to his objections?
"The onus is not on physicists to counter flat-earth claims, they just have to point to the facts"
Yeah, but the guy on the linked-to page is not making claims. He's just asking why.
It would be far more useful for you or someone else to provide a link that answered his specific questions in detail rather than give a link to a non-specific information dump that does not specifically address those questions.
I’d rather point out the absurdity of two known Russian FSB operatives saying they were there to admire Salisbury’s famous 123m spire
An information dump is far more beneficial to the discussion of the case than a discredited former ambassador who tends to side with kleptocratic maniacs in Russia
Commentators ITT seem careful not to mention Murray's tireless advocacy for Julian Assange, while other journalists and former ambassadors have ignored his case entirely.
Maybe you have another link with objections to his objections?