Isaacson's "clarification":
"To clarify on the Starlink issue: the Ukrainians THOUGHT coverage was enabled all the way to Crimea, but it was not."
contradicts what he wrote in his book:
"Throughout the evening and into the night, he personally took charge of the situation. Allowing the use of Starlink for the attack, he concluded, could be a disaster for the world. So he secretly told his engineers to turn off coverage within 100 kilometers of the Crimean coast. As a result, when the Ukrainian drone subs got near the Russian fleet in Sevastopol, they lost connectivity and washed ashore harmlessly."
Now if Isaacson lost his mind or had an alternative recollection to what happened in reality, don't you think it's strange that the book mentions the oddly specific distance of 100km from the shore...if in fact the coverage wasn't there at all as Isaacson later claimed on Twitter? I don't believe a biographer would just invent such a random fact to fill out a paragraph in a book. I also don't believe the Ukrainian military would've sent out drones on the mere *THOUGHT* that they'd have coverage. Do you?
Anyway the book is still for sale with that same text, so I'd have my doubts that the "clarification" is real, and not the result of Musk's leaning on Isaacson to change the narrative because he realised version of events in the book made him look bad.
Like I said already: Musk is no stranger to revisionism.
Like you said already: he said/she said.