this decision was a compromise. we demonstrate the impact of GWP(20) for the most relevant case (high-emission SMR-CCS is out already with GWP100), while keeping the figure digestable (we actually forgot to put this GWP20 figure in the supplement. we have GWP20 sensitivities for the other figures).

Well, high-emission blue H2 is "out" with GWP100 in the sense of being more emissions-intensive as green H2, but that does not mean it is out in practice. And so showing that in the relevant metric it is catastrophically worse might help to ensure that regulation makes sure it does not materialize.