1. Presuming the boat was attacked. 2. Presuming it was the Russian (or I'm presuming you did lol) 3. Based on the previous two presuming it was not an accident, and 4. Presuming apologies and compensations would not be issued in case it was.
No, you start investigating based on available facts.
Don't be pedant, especially when it doesn't even make sense.
"Ilves said the vessel might have struck a mine."
My guess is that those mines were put out by Ukraine military to fend off the invasion, but the article doesn't say.
For instance, Ukrainian military claimed that tank that drove over civilian car in Kyiv was Russian, but it was Ukrainian.
IIRC, they claimed that it was an Ukrainian Strela-10 that was captured by an illegal combatant. Regardless, I just wanted to point at that piece of information without claiming that it was true.
I also would be careful with AIS data right now, it's easy to spoof and has been done so very recently in the black sea (https://www.maritime-executive.com/article/hackers-deface-ai...)
I do think (as a Brit) that the argument they were deliberately left unprotected from U-boats has significant credibility; I would not be at all surprised. I am not a pacifist at this stage of my life, but I am regularly surprised at what my fellow Brits in particular do not know about our military history.
Then again, in this country, schoolkids don't generally study the First World War until they are of an age where the boys among them would have been illicitly signing up for it, and by that age, studying history is optional.
It's exceptionally clear they were not spreading misinformation, they did not structure the comment as a factual statement.