Yes, some of the criticism of his advice may be justified (as being too opinionated, an itinerary too fast, etc). But a lot of it is flat our wrong. Such as post #77 which says “He’s that stupid he thinks Northern Ireland is part of Ireland and not the United Kingdom”, followed by a dizzying array of emojis including clowns. A following post objected to this and quoted what he actually said, which is very different from the false statement.
The person who wrote #77 is from Northern Ireland (Lisburn) and is also the source of the anti-Yank rant. See post #86.
“They said you are never more than 10 feet away from an idiot, this didn't apply as much during lockdown as the Yanks weren't allowed to travel to the UK.”
Then he goes on to rant about 4 guys who apparently violated some kind of covid protocol in Northern Ireland, but it is hard to tell what he is saying. Given that they had to test negative before getting on the plane to Dublin, it doesn’t make sense they were required to isolate for several days after arrival before traveling to Belfast. Or were they? Anyone know?
In any case to extrapolate from this to “most Yanks” as he does is . . . I don’t know a word for it. Maybe “ignorant” is the kindest.
As for the US drivers, this is veering off-topic, but I will simply say that driver etiquette and consideration for others (or lack there of) is very location-specific in the US. In general terms it tends to get better the father north you go (think Minnesota, Seattle). There is an old joke about 4 Seattle Volvo drivers at a 4-way stop who never move, because each driver keeps deferring to the others. “After you . . . .Oh, no, after YOU” and so on.