I absolutely agree on everything but one point, however I do not quite have a solution to it as it's a subjective thing for most people.

3.) Pictures and Videos with a title and nothing else

Should not a good photograph or a well made video be enough on it's own?

Quality amateur and pro photographers seldom share details in text on why and where he took the photo or how he took it and least of all technical details. This is the reason why Instagram is so successful as you don't need to write supporting text content.

I understand that while it's not hard to differentiate between good and bad photographs on most cases, it is hard to differentiate between low quality and quality-less photos or spam photos with the sole objective of milking the system.

This is why I said I do not quite have a solution, but this is something which I think will slow the onboarding of good photographers on to Steemit. It's a problem that most similar services do not allow photographs without supporting long text.

The text does not do justice to the purpose of a good photograph which should be able to say what it wants to say without the need for words.