I think the main problem is when any group start to compare their specific enjoyment of an activity to anothers. It isn't just in this wild camping thing, How many times have we all heard of people being rescued by an MRT and the walking/climbing community say 'they weren't prepared, they weren't proper walkers'.
Education and understanding of other user groups is the key, for one person something pretty 'extreme' may be parking their VW 2/3 of a mile from a campsite, for others it may be spending £00s of pounds on gubbins, slinylon, carbon fibre, matching AplKIt luggage sets and getting on a bike costing £000s before riding off following a digital breadcrumb trail that someone else came up with, and for others it may be minimalist second hand stuff and an OS map, to sleep under an Army bivi in the back end of nowhere.
My point being that although the original article spoke about Wild Camping being toxic, what he really means is that he is a bit p'eed off that he thinks the name of his hobby is being hijacked by groups he doesn't relate to! He even describes himself as 'decent', but I would guarantee he has dropped some litter somewhere. I did the WRT last year, and came across numerous gel sachets, biscuit wrappers and flapjack wrappers. I know now that you will say that it wasn't 'us', it was 'them', but honestly, if it was 'them' it would have been Stella cans and NOS canisters wouldn't it? Besides, some of the places I found stuff you would not have got a lowered Clio or a VW campervan!
So it's not a dig, just an observation that this chestnut pops up frequently, and if we could all take a moment to think it through, Wild Camping can be whatever it means to the person doing it, let's just not get bogged down with claiming we are 'wilder', and therefore more 'decent' than someone else!