Question on symbiotic germination

[Fabian24]

I would like to know your opinions about something that has really puzzled me for some time.

Before the development of asymbiotic germination of orchid seeds by Bernard, Burgeff and Knudson, around 1922, lots of hybrids were germinated and grown in the same pots of adult orchids.
I see that many people, out of curiosity, still try to replicate this natural germination process, but so far I have never seen any blog or webpage where they get past the stage of protocorms or much further .

Why something that was usually done 100 years ago to get hybrids is now so difficult to achieve.

I leave here some options but as it is just speculation I would like to know what do you think the true reasons could be...

a.) The effort and work to germinate seeds and grow them this way is immense but hybrids were so expensive at that time, that it was worth the endeavor.
b.) People are now lazier than people at that time
c.) There was no TV in 1900
d.) Most orchids in 1900 came from the tropics and were wild collected. So they came with the precise mycorrhizal fungi that allows seeds to germinate more easily. Now they are grown in vitro and even if they get some mycorrhizal fungi afterwards when they are deflasked, these are not the best strains of fungi for seed germination.
e.) ..........?