Phrehdd -- I've been at it for 50+ years myself. Zeiss, Miranda, then settled on Nikon F, went up to F5, then digital. Hasselblad for a while. And yes, a good old 4x5 view camera. 1000 mirror. The old 85 f/1.8, the old 21 where you had a lock the mirror up. 35 f/1.4. 28 f/2. I suppose I've had 15 or 20 different Nikon lenses, a handful of oddballs such as the Kilfitt macro, the Leica 200 and I can't remember what else.
And I shot for years in the Papua New Guinea rainforest where it was my practice to carry 2 Nikon F bodies each with a different lens (one wide, one short tele), one loaded with color, one loaded with b/w. Gossen LunaPro and Weston Master V. So I know a thing or two about equipment in the field under harsh conditions and what works and what doesn't.
I don't need a lecture on lenses, thank you very much, and I certainly don't need tagging as a "one lens does it all" shooter. I say there are definitely times when you want to carry just one lens. Did I say one ought to own only one lens? I did not.
I'll give you another example. Not long ago I went to see about shooting a lava flow entering the ocean. I wasn't sure how close I could get. I wasn't sure about the terrain, except in general. I looked at my cabinet of lenses and chose the 28-300 once again, instead of the 70-200 or the 300 f/4. Why? It's obvious, isn't it? I didn't know what I was going to need. It was a 4.5 mile hike in. Along the road I shot an interesting shot at 28. Finally at the ocean entry, there I was in the dark, pitch black, walking around on lava, D810 and 28-300 on a Gitzo monopod. Hundreds of other people. I shot at 300. Yes, taking the 300 prime would have been slightly better (one stop, higher quality) but then I'd have missed the 28 mm shot.
http://imgur.com/a/vOqpz
When I got back I bought the 200-500 because I saw that would have been the right lens for everything but the wide shot.
So, yeah. Lay off the condescending BS. Photography is about getting the shot. It's about art. It's only secondarily about equipment.