I too see the "anti" stuff as being mainly aimed at branded goods and can see how some brands gain popularity - "Star endorsement" as well as through items being found in the hands of a lot of folk due to their being available and fit for purpose.
I am a pro gear reviewer, writing for several magazines - so I have chewed my way through loads of gear in my time! - and have also been in the Outdoor Education game since I was 18 (far too many years now) doing all sorts from teaching canoe skills to leading international expeditions - so I have used a lot of gear in a lot of situations - AND I have designed gear for well known "labels", written several DIY gear books......
It is true that there are many "revered items" that folk recognise by name and trust (perhaps with more reputation than is warranted) and a lot of items that no one has realy heard of that those "in the know" trust just as much but those not "in the know" can not trust as much as they have little or no info to base their trust on.
Equally, what suits one users needs may not suit anothers - I for instance have a narrow grip - knives and axes with "fat" handles are no use to me while they may be just what someone with a wide grip needs!
Although I am not a label lover (I unstitched the Swanni label off the shirt I had of theirs as I disliked the look) I do have a lot of gear with recognisable names on them - a Tilley hat, a 5.11 Shirt (watch developments with this label!

) a Ventile jacket (or three...) Tatonka tarp, RM hammock etc etc - but I use these "uniform" items as I have found that they work for me.
Some gear is hyped deliberately by the big names (I am with Wayland on this score) and seems to count on the "star endorsement" to achieve a market prominence, while other items of equal or greater value gets missed.
I am also a big beliver in "DIY" and learning the skills to make your own ...whatever... but can see that this is not a practical route for many.
The "anti" reaction seems to me to stem from folk getting a bit hot under the collar about folk missing out on the lesser known/DIY options due to the prevelence of the hyped and more widely know about items becoming revered as the only real/valid options AND the reverse - folk who trust certain items of kit scorning the lesser known items as not being as good as the items they trust as the best.
Chose what suits your needs (and big it up if you want) but there is no real need to decry other folks choices if they are happy with them

I realy dislike the aesthetics of Kydex sheaths and plastic handles on knives and as I do no comercial hunting as part of my bushcraft, they are not totally needed for my usage so I prefer to use atractive, traditional, germ harbouring, less durable leather and wood - I will say that a knife with plastic and Kydex fittings looks horrible and is not for me BUT it is just what a pro hunter would need so I would not decry his using one...
Try to be nice out there, only knock what is just plain "unfit for perpose" and use "constructive criticism" - if you think that something looks bad then, fine that is your opinion and you have a right to voice it - but remember those bad looks may suit someone elses critical needs....- it is a big world with lots of options

not everything will suit everyone, the popular items may only hold their position until the next great find is made and commercial items are out there to make money for people as well as do a job....