Content creators rely on SD cards everyday and cameras actively sold today use it.
Devices stopped being shipped with USB-A a long time ago now.
There are plenty of fairly common USB-A peripherals still in use anyways. A lot of audio interfaces, mice, keyboards and webcams rely on low-bandwidth but ubiquitous ports like USB-A. Apple and their pride would never put one on a modern Mac, but we're really at an impasse: neither side will adopt either standard, so it's more likely that we'll simply see wireless peripherals gain popularity instead. Not exactly bad, but kinda an asinine take for a company that just released a professional desktop computer with USB-A, but refused to add it to their laptops.
Now if only my car had a USB-C plug…
Are you talking about Macs or devices in general? My 2021 laptop has an SD card slot, x2 USB A and x2 USB C (well, Thunderbolt 4). Despite how much I like USB C (all the devices I take with me have it), USB A is still here and will be for quite a while.
Oh, I forgot to mention that my laptop also has (full-sized!) HDMI and a headphone jack.
I interpreted this to mean the male side. Sure you can still buy laptops that accept USB-A, but I haven't seen any peripheral that still uses USB-A in a long time. I'm sure you could still buy a thumb drive with USB-A, but I wouldn't.
Wired Mice, Wired Keyboards, Thumb drives, external hard drives, printers, webcams, external cd/dvd/bluray drives, etc..
What peripherals do you look at? Barely any of them use USB-C unless they're explicitly USB-C docks, or Thunderbolt peripherals.
(Yes, photographers use SD cards although they often connect cameras directly and USB SD readers are cheap.)
I use it for noncritical data because the sd card is slow and it could fail. Mainly recent downloads or video files.