If you scroll a little further down, you'll see that it lists components of an office suite as:

- a word processor - a spreadsheet application - presentation software

This doesn't look like it has any of these

Have you considered that “office suite” has drifted in meaning since Microsoft Office was introduced and things like:

- chat

- video calls

- notion

Might now be more important to an office than word processing or presentation software?

Maybe those those things may be more important, depending on the office, but IME, that isn't what people usually mean when they say "office suite".

For sure