You have your opinion, others have other opinions. That's the beauty and the core of Steem ;)
To quote Rosa Luxemburg:
"Freiheit ist immer die Freiheit des Andersdenkenden"
("Freedom is always the freedom of the one who thinks differently")
Everyone's free to do the thing they want with their STEEM and SP. If you want to spend your time and SP with downvoting others - you're free to do it. But I feel free to sponsor others, especially smaller accounts, with SBI-shares to encourage them to create content here.