Before I stopped counting, I found 8 wireless keyboards using bluetooth, 9 wireless keyboards using a USB-A receiver, and 10 wired keyboards using a USB-A cable. It seems like USB-A is still alive and well in the peripheral ecosystem.
Here's a link to the search results page I used: https://www.komplett.no/category/10264/datautstyr/pc-tilbeho...
It's a website which is commonly used by gamers, so wired keyboards may be over-represented compared to the general population. But it clearly shows that actually, USB-A is still really commonly used in new peripherals sold today.