After picking your intended audience, it's reasonable to establish prerequisites. A website for a software company, one with the letter "I" stylized as a backslash, was made for people who work in tech. Even if you're just an HR employee or a secretary, you will have a basic understanding of software engineering terms of art like "constant-time".

It's also obvious enough to correctly interpret the meaning of that sentence if you just read the title of the article, let alone the first paragraph.

Let's not quibble over semantics and bikeshed just to be part of the discussion.