Maybe this is sort of like the opposite of how scam emails are purposefully scammy, so that only people who can't recognize scams will fall for them. Only people who know what "a DataFrame library" is - which is an enormous number of people, since this is probably the most broadly known concept in data science / engineering - will keep reading this, and they are the target audience.

> which is an enormous number of people

While that may be, I think it would make sense to describe the project in a succinct way on the first page a visitor lands.

It is described in a succinct way. "DataFrames" is that description. It's the very first text on the page. It's really the same as having the word "database" be the first text on the landing page of a new database project. If you don't know what the word "database" means, the landing page for a new database project is really not the place to expect to learn about that. The "data frame" concept is not quite as old or broad as the concept of "databases", but it's really not that far off. It's decades old, and is about as close to a universal concept for data work as it's possible to get.

But you're not the audience? There is very little to gain by tailoring the introduction to people who aren't the audience.

You don't go car parts manufacturer expecting an explanation of what an intercooler is.