Yes, it's the marketing lie and psychological manipulation technique known as "Creating a sense of agency". It is -- like "only 3 left, act now" -- designed to make someone order something via the bandwagon propaganda technique.

By making you think other people are looking at it, it makes you think "I better get it before it sells out" at the SUBCONSCIOUS level.

It's one of the many marketing and propaganda techniques designed to make you feel instead of think... because once you start thinking, MOST marketing and propaganda falls flat on its face.