Don’t know if the methodology is still the same but when vetooo, Ross Tucker and doc veloclinic started to popularise these calculations some ten years ago, rider weight was normalised to 70kg. This is going by my memory, so everyone please correct me if this is wrong.
More generally, Pogi is just out of this world ridiculous and taking the piss, but others have done really well too. Colbrelli almost takes the cake.
Aderlass showed that pretty low tech blood doping regime can still function well without tripping the blood passport and that domestiques resort to those methdos as well. Add to that the fact that governing bodies are fairly gingerish to pursue passport cases, which is kinda understandable given legal fees when running against big corporations or states, and there is quite some room to play with.
In the Aderlass news there were also mentions of possible artificial oxygen carriers (such as perfluorocarbons) use. As many will know, a certain Mauro Giannetti of UAE has first hand experience of using those.