This great point applies to posts in general, not only videos. The 7 day limit is inconvenient and arbitrary from the content creator's perspective. It is justified by the crypto aspect, though. Steemit ends up being a crypto system with a social network on top if it. Which is great, it's helping me a lot in my journey into the world of cryptos. But for the blogger or vlogger it is very hard to digest the 7 day limit.