This person clearly likes hot sauce, and buys a lot of it. Maybe they just buy literally everything, but maybe they're more selective. I'd bet some of them are fermented, and some are lighter on the vinegar taste, even if they water it down a bit to focus on the pepper flavor. It isn't that hard to make even a cheap sauce not taste too overwhelmingly of vinegar
I can't. Too blurry to read any labels and I don't consume enough hot sauce to know what it is by looking at the shape of the bottle/color of the label.
Accurate. I love hot sauces, but I have had to tell friends and family to never buy me hot sauce because chances are it will suck or be samey. Especially those gift packs they push around the holidays.
I used to keep a collection, until I found ones I liked. Now I have about 8 different types that are best for different foods.
Some are definitely cheap and vinegar (which go great on fried chicken), some are earthy and barely sour for soups.
Overall though, few sauces that aren't gigantic commercial varieties taste similar. Even Frank's, crystals, Texas Pete and Louisiana all have distinct flavors