[kaishiro]

Doesn't look all that different from your own site: https://i.ibb.co/VWxZdhr/rado-bg.png

[Brajeshwar]

This looks like to be generated mostly by a CRM. This makes lot of sense.

[Tade0]

Actually, this here is semantic HTML. The previous example is not.

[vehemenz]

In which contexts would it matter whether one used article instead of div?

If you're on a screen, it makes no difference.

If you use a screen reader/braille display, you will only be informed about a small subset of "semantic" html elements, such as headings, lists, links, and tables.

If you think it matters for "XML" reasons, well, it's not 2006 anymore.

[rado]

The former isn't from a CMS.