So I guess no one noticed the blacklisting in the new 0.13.1 code?

So if you run 0.13.1 you will find that it will connect to other 0.13.1 nodes on the network, but not to 0.13.0 or lower.

i.e. you are disconnecting yourself from the majority of pools, mining transactions on the network.

At the moment that's ~75% of blocks.
Your txns can of course get to the pools via other roundabout ways, but you wont connect to them directly.

Yeah even the main core developers implement blacklists without making it clear they exist