Why would we discover modern medicine quickly just because we have the internet? There is no reason to assume some of the concepts needed would just happen to spring up because of a cacophony of voices on the Internet (and a lot of collaborators would die while you work with them). It could even be bad for progress as all problems get broadcast, loud but wrong voices get huge amplification, etc.
The quote also is including all medicine, not just modern. Cold starting medicine then feels very hard.
Btw, early modern medicine was pretty much unencumbered by regulation - so there would be little change.