thats back when satoshi was beginning to realise people were becoming too dependant on him..
thats about his personal time and sanity may be stretched too far.. nothing to do with network security

EG instead of one person trying to help out 12 brands (should satoshi be still here today)
EG instead of 400 people trying to help out 1 brands hoping to get paid by some VC cartel

400 should help out 12 brands

infact he was happy with people having their own versions.
EG he worked on his version that was on sourceforge right up until when he disapeared. and gavin had a version on github.

by the way the version on github started by gavin mid 2010(not satoshi's sourcforge of 2009) , expanded and then rebranded and then taken over by the now "core" group.
by the way the github version actually has had 7000+ forked implementations from it where people tweak it and run on the SAME network.

its actually GOOD to not have a single point of failure
its actually GOOD to tweak things and see what works and doesnt where by some versions are wrote in GO or ruby or java.
using different database structures. but all following the main consensus rules. and all only changing the consensus rules if all/majority see benefit of such.

if blockstream want to solely run an implementation.. seeing as they only came into existence in 2014.. THEY should go play with an alt..
wait they already are
elements
monero
hyperledger
litecoin