I've climbed Ben Nevis. It actually is a fairly long hike. Takes a good solid day to go up and back down (about a 4000' vertical ascent). That said the first half is a fairly easy trail (albeit long). The second half starts getting steep in parts and for the last quarter or so the trail basically gives way to shale which can be difficult (and slow) to navigate. Of course, spending 30 seconds to read the info plaque at the bottom of the trail would inform anyone of this before they started. We climbed it in September. Started in shorts and T-shirt weather and it snowed while we were at the top. We actually read up about it first so knew this could happen and had packed coats in our backpack. And yes the top was obscured by clouds (very common) but the lower 3/4's had beautiful views the entire way. Well worth a visit if in the area. The reviewer, if real, is just an idiot.