I just checked and about:config is also available on Iceraven (another Firefox derivative)
Also, if anyone (like me) switched away from Fennec because it was flagging as having a vulnerability in it recently, it appears like it’s been updated and that issue has been resolved. (I’m switching back because I have found Iceraven feels slower)
This isn’t even an Android One thing, but this post made me nostalgic for my Nexus 6. That was my first android phone, and I had a lot of fun tinkering with rooting and custom ROMs. The codename for the device (used for ROM stuff) was shamu.
I miss my magnificent whale