Many people are also misinformed, or their perspective leads them to wrong conclusions about what constitutes various versions of LC.
For instance, a friend was telling me that someone she knows was extolling the virtues of her keto diet, and how she'd lost a lot of weight in the last several weeks eating keto. When they got to talking about what she was eating on her keto diet, her friend claimed that she didn't need to take any supplements, that everything she needed was coming from her food - for example, she was getting massive amounts of magnesium from molasses, which she was using to sweeten her oatmeal (and claimed it was keto oatmeal, because it was made from steel cut oatmeal, rather than made from rolled oats). Of course neither molasses or oatmeal (whether it's steel cut or not) is remotely keto diet friendly, and my friend knew this from years of attempting to do LC that those were not keto foods, but her friend still insists that she is doing keto.
For another example, my brother has eaten LC for many years, and has done much better with his weight than I have, so he's been in maintenance for quite a while, and he's able to eat a little bit of starchy food without it causing a problem. When we were trying to find a place to eat after our mother's funeral, his daughter shot down the idea of just getting pizza (I'm used to eating just the toppings, thought he did the same thing), because "Dad won't eat pizza. He won't eat anything but meat." With that comment, I thought he must have gone completely carnivore. So we settled on a restaurant, and DB and I both ordered steaks, with the "vegetable medley" on the side. Of course it came with a potato choice - I gave my potatoes to DH, and DB ordered a baked potato with his meal. We both ate our entire steaks, he ate all of his veggies (so obviously he's not carnivore), I picked out the bits of yellow squash and zucchini from my veggies, left the french cut green beans and bits of carrot because they weren't very good. Then I saw DB start to eat a little of his potato (I'm sure he didn't eat more than 2 Tbsp of it - he only had a few tiny little bites of it), and I'm back to realizing that he's actually eating on a LC maintenance WOE... but my point is, that in spite of him eating his entire serving of veggies, and a little of his potato, his daughter still perceived what he eats as "nothing but meat".
Ads like the one referenced above certainly don't help with people's confusion about what constitutes keto (I suspect that the supposedly keto diet the friend's friend talked about was at least 40 or 50 carbs, like the supposedly keto diet referenced in the ad above), or LC in general, but there's also the way that DB's daughter perceives his eating patterns as being "nothing but meat", simply because he doesn't eat huge chunks of bread, and big piles of potatoes or pasta like she eats.
No wonder there's so much confusion out there about what constitutes carnivore, keto and LC.