Smartcard firmware flashing is performed on the Librem 5 as well.
In fact, all of them can be performed on the Librem 5. Some can also be done from a host computer using uuu and flashing mode.
There’s also touchscreen controller (FT8006P) and GPS module (Teseo-LIV3F) with upgradable firmwares. I’m not aware of anything else.
That’s a bad link (personal fork), and Redpine firmware is included in the firmware jail these days.