My gran used to patch my jeans using denim from a pair of even more wrecked ones. Looked a lot like that photo.
I would – and indeed, sometimes do – go out in Craghoppers to normal places (I’ve worn them at work, even), so I don’t think there’s anything inherently wrong with wearing “active” pants to the pub etc. But I think in terms of making a positive fashion statement, the statement those are making is “stay indoors.”
That said, I’m an IT geek in my 40s, so the extent of my fashionista leanings is a Battle of the Planets t-shirt and Spider-man socks. I wouldn’t listen to me if I were me.