Dude, do you realise that ancient Greece was before the Medieval era, and almost all its history, culture and literature were destroyed by Christians? During the Byzantine Empire where you are focusing in this video, most Greek cities were repeatedly sacked and rampaged and occupied. Your point about no Ancient Greek ports in the 10th century, or a pligrim thinking Parthenon LOOKED brand new and christian, it all means absolutely nothing. And what about all these sculptures from BC that were dated by scientists? Were they all a part of some big conspiracy? Maybe try reading some history, or at least google 'Byzantine Athens', before you go ahead with such a ludicrous theory, or even get back to playing Roblox and Minecraft. And stay there.
There are references of all ancient cities in ancient scripts. The major cities were abonded during medieval ages due to lack of security. There are also reports in texts about how mass movement of citizens occured to villages and migrations to foreign countries especially to north Europe. I believe you havent read anything about greek history.
Man, your opinion is like someone who has not read anything.... renaissance was actually the study and rebirth of ancient greek knowledge and culture. The answer to your question can be found in the movie "Agora". The greek cukture was actually destroyed by Christianity after the fall of Roman empire. Luckily, there was at least the schism and hellinism managed to survive somewhow. Your video expresses an opinion which is invalid and with your logic any ancient civilization can be argued that it didnt exist just because some other civilizations havent heard about them. Balkan countries were not developed at all back them to even keep historical records. Finally you can find greek cities on all middle east and turkey and references in arabic and indian scripts, even chinese... (Great Alexander campaign etc)
