Broad pages ask you to sort too much
They are helpful when you are still exploring, but they also make you scan items you may have already ruled out.
UX article
Why category pages often feel easier than broad pages.
When you already know what you want, a focused page is usually easier to use. It removes extra choices and helps you get to the next click more quickly.
Most of the time, a simpler page just feels calmer to browse.
Category pages match what you already had in mind
If you came in looking for shoes, bags or jackets, landing on that exact section feels more direct and less distracting.
How this site uses that idea
The homepage gives you a simple starting point, then the narrower pages take over once you know what you want to open.