I can’t agree. It’s an old CAPEX vs OPEX paradigm - everyone decides what suits him best.

For example imagine you have 130 SP reward, you post every week and maximise your exposure (traffic on your posts). In the current state of steem economy you have a choise - power down and buy upvote with 10 liquid steem or self-vote. First approach give you more exposute at-moment but less in mid-term, so you need to decide which road you go.