Too disagreeable it's wrong

Wanted a white semi gloss interior paint from Home Depot. I know they sell ready to go paints from glidden but forget which. I find two. One gallon says (needs tint) and the other gallon I find doesn’t say; just says base 1 pure white. Obviously (needs tint) is not ready to go so I still inquire about it to know the specifics and what this all means. Ok. Then I ask about the base 1 pure white gallon. Says it’s not ready to go either I call bs. And I go search on Reddit. Turns out it is rea