Its not so much that the appy dad is gone, its that SSDD has until recently still been available at seed banks. Bodhi has been pretty clear on this, don't F2 and distribute strains that he is still selling through his official channels.
Having said that I have seen numerous sources say that no more SSDD packs will be dropped to any seed banks so its probably safe to start F2'ing these.
I have 11 packs of SSDD F1s in the vault and have thought it might be fun to do alittle fun run with these at some point. Distribute these out to some folks that can all grow them out at the same time and have a friendly competition about who can find the best pheno. Come up with our own "forum cut"