I asked someone who wrote a huge reddit post about it, and they responded with "idk, I just looked at it and didn't get it."
I think people are just resistant to change, and only want a system that they think is 100% a clone. Honestly, IDK how you look at lemmy and don't think it looks like reddit, but I guess it is just that browse local is the default option. I guess browse all should be the the default for now, but I actually like browsing by local first to see what is going on in my local instance before looking at the rest of the fediverse.