At a guess, it is copy/paste from MATLAB marketing materials, intended as a sort of appeal to authority – "we used MATLAB so our results must be good".

Here's what I got when I asked it to finish the paragraph "In summary Matlab's rich set of features, mathematical capabilities ...":

"In summary, Matlab's versatile capabilities, including robust mathematical functions, extensive libraries, Simulink for dynamic system modeling, support for diverse data types, and its user-friendly programming language, collectively create an environment conducive to efficient numerical computations, effective data visualization, and the seamless handling of complex scientific and engineering tasks. Its popularity in both academic and industrial settings, coupled with an active user community, cross-platform compatibility, and support for parallel computing, positions Matlab as a top choice for professionals and researchers seeking a powerful and adaptable tool for their computational and analytical requirements."

"diverse data types", "user-friendly programming language" are exact matches in the linked snippet, and the rest of it is very similar in tone ("strong community support" vs "active user community").

ChatGPT also likes to end on "In Summary"; when I asked it to list Matlab features it did just that.

That always tips me off too, its sounds like someone following a high school essay template

I remember being told in English class: 1 intro paragraph, 3 argument paragraphs, 1 summary/conclusion paragraph at the end