" He did it safely ". There is NOTHING safe about a boat traveling at 12 knots
with the only one onboard asleep.
That is your opinion, but you still have not explained what is not safe about that. If the regulations allow it and thousands actually do it (like two family members who are sailing solo at this moment) and you take every precaution that you can take, for me that is safe enough.
I used to be a SAR pilot and you don't want to pay 100 dollars to all the people who we had to save off the water (in the Caribbean) who were with multiple people onboard, but still made all the wrong decisions, were unprepared and had no clue what they were doing, so they ended up in a ship wreck. Many survived, because we came and rescued them, but quite a few died.
Just recently I saw a video of a couple that had bought a brand new catamaran, they had to cross the gulf of Biscaye, wanted some people onboard with more experience, so hired a captain and a deckhand..............turned into one big sh*tshow with lots of very bad decisions (read: dangerous decisions).
And then there are the loads of videos of people who sold it all, bought an old sailing vessel and without knowledge of absolutely anything they decide to cross the ocean. But hey, they are with the two of them, so what can go wrong ?
In other words, being with more than one person onboard is absolutely not a guarantee the passage will be done in a safe manner.
Or we have the channel of Awanui NZ, a Nordhavn 51. Mark is a retired airline pilot, very capable of making sound decisions and also he has made long passages solo. Is he dangerous as well ?
Then I see Gus, who is a mechanic himself, who knows the boat inside out, he has been doing this now for many years, who does stay up to date with the weather (you won't believe the amount of people who don't check the weather at all), who does think of back up plans, who stays outside of busy stretches of water on purpose, who ensures that he gets alerted when a boat enters the safety zone. I think he said he would get an alert whenever a boat would get within 20 nm, but even at 10 nm that would be more than enough warning time.
So unless you can explain why you have the opinion that this was unsafe I am not going to take your comment very serious. It sounds more like being angry because he did something you don't dare or want to do. Don't get me wrong, I would not be capable of doing it myself, because I know my limitations (I just can fall asleep so easily), but Gus is young, he has the energy and most important for me was, that after several days on the water he was still very capable of making good rationalized decisions. When people get tired they start making mistakes and their thinking process is not that quick and correct anymore.
In other words, still looking forward to your explanation and saying: just because I say so is not going to cut it. It is fine to have a negative opinion, but you should be able to argue it.