This isn't a dupe! I swear!
Just heard on YouTube that the second season of Cobra Kai is streaming free from September 11 via an ad. The only additional source I have is from LifeHacker:
The first of the announced free watching opportunities will be for Cobra Kai season one, which is YouTube’s sequel series to the Karate Kid films. From August 29 through September 11 (possibly a day later due to Australia being a bit ahead), all YouTube users will be able to stream the entire first season for free.
After that two week period, season one will return behind the YouTube Premium paywall and season two will be streamable for free, though only one episode will be added per week. So mark your calendars, folks.