Yeah I agree with you also.
This is why steemit needs to upgrade.
Take from others and implement it here.

• Recommendations
• Feed prerequisites (tag based)
• Rising stars, Most follow-able
• Controversial zone (like the nsfw tag)
• Elite zone (for professionals and intellectuals)

All these would aid users with the discovery process.
Thus growing the quality aspect much faster.
Can't do much about the parasites.
Opportunists are switched on!