GIL is a design specification of the Python language, rather than a limitation of the Raspberry Pi  (multiprocessing is possible in Python, often with only a few lines of code , but multithreading is generally not). The new processor will have no effect on the limitations associated with GIL.
Update: after trying to peel a layer off the square of tape which was on the heatsink, I got cross and just ripped the square off. I saw that it had left a layer of adhesive sticky stuff on the heatsink. I pressed the heatsink on the SOC and after a few minutes it was stuck so hard I could pick up the whole Pi, case and all, by grasping the heatsink. I have ...
What you are trying to achieve doesn't take a lot of ressources, so if it is possible on a Arduino nano, it is possible on a Raspberry Zero (in terms of ressources)
Then, you will have to drive the LEDs from the Raspberry, for that you will have to use GPIO. GPIO can simply, and in an Arduino way be used with WiringPi. It's a library that allow you to use ...
You could of course just break out the WLAN chip and bluetooth chip, respectively.
The WLan Chip should be the little thing with the raspberry icon on it.
But why'd you do this? Fear of getting hacked, ripped off?
You have multiple ways of protecting yourself if you feel paranoid....
LEARN USING LINUX: sudo ifconfig wlan0 down
this will disable your wlan ...
To elaborate the answer from @cachius: the OUI has changed from
B8-27-EB (hex) Raspberry Pi Foundation
B827EB (base 16) Raspberry Pi Foundation
Mitchell Wood House
Caldecote Cambridgeshire CB23 7NU
DC-A6-32 (hex) Raspberry Pi Trading ...