@jxself Yep, the deblob script is what's telling me where to find the proprietary software.
I'm gathering hard proof so I can win internet arguments pretty much.

Found some more:
drivers/media/dvb-frontends/af9013_priv.h
drivers/net/ethernet/realtek/r8169_main.c /* The following Realtek-provided magic fixes an issue with the RX unit * getting confused after the PHY having been powered-down. */ - looks likes executable code is being written
drivers/net/usb/r8152.c case RTL_VER_12: -looks like executable code is being written
drivers/net/wireless/atmel/atmel.c /* A stub firmware image which reads the MAC address from NVRAM on the card. For copyright information and source see the end of this file. */ - meant to be GPLv2, but I don't see any source code.
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c - not sure if these are just regulatory tables or are executable, seeing rtl8723a_phy_1t_init_table etc, same all below
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192c.c
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723a.c
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c
drivers/net/wireless/realtek/rtw88/rtw8821c.c
drivers/net/wireless/realtek/rtw88/rtw8822b.c
drivers/net/wireless/realtek/rtw88/rtw8723d.c
drivers/net/wireless/realtek/rtw89/rtw8852a.c
drivers/net/phy/mscc/mscc_main.c