Yes, the guy sums it up absolutely perfectly (and thanks for the link to a blog previously unknown to me, I shall enjoy reading it later). That was precisely my experience when I first made it to the summit of Glyder Fawr, which was a bucket list achievement for me. It has some similar-looking false tops but the highest one had a large group of about 14 adults sitting around the summit rocks and eating their sandwiches. No way did I want all those red and blue jackets in my photo, but nor did I want to hang about waiting for them to get up and go.
I guess they were of exactly the same mindset as some people I encountered in my town centre just two days ago (this should be in the small rants thread!). In Clinton Cards a couple in their late 60s were firmly planted in front of the section I went there to see, and totally ignored my arm reaching around them to pick out two or three cards, while the books I wanted to browse in Waterstones were in a bit of a corner where a smartly turned-out man of 70-ish was looking at the same section and stood his ground. Exactly the same selfish "I was here first" attitude. Now I was brought up to be polite, and if that was me I would have taken a step to one side so that we could share.