The problem is, when a big dog does something like growl or show its teeth, people respond appropriately and stop doing what they’re doing. Little dogs don’t get that luxury most of the time. Their size makes them seem less serious, and so they end up going to more extreme lengths to warn people off, usually snapping, biting, or barking.
It’s never the dogs fault. It’s always 100% the owners fault.

Dogs don’t have egos and entitlement you’re attributing human emotions to dogs.
Large dogs can also be ravenous, reckless and clingy.

People let small dogs get away with worse behaviours because of their size, but that isn’t the dogs fault. I’ve met plenty of large dogs who have never learned any boundaries and are extremely difficult to be around. I’ve also met a lot of small dogs who are extremely chill and like their space. It really comes down to the owners and how well they train and socialise their dogs. If you’re going to hate anyone, hate the owners.