Too early to commit, probably. Certainly on a wide scale.
Too early to start developing and understanding what we can do - definitely not.
However LH and SAF I'd put reasonably down the list of best solutions. SAF (by which we mean biokerosene) is very feedstock limited as well as tending only to give about 60% reduction in overall footprint - whilst the research into non-CO2 emissions is very very preliminary. LH looks lovely in principle, until you consider the mass and energy cost of all the cooling equipment - for my money gaseous hydrogen has much better short to medium term prospects.
And as this is the Private Flying page, we do need to consider what might actually work in lighter aeroplanes....
G