Yoyow might fix the centralization issues, just read their whitepaper:

every user holding the token of a system has the right to vote, with the holding YOYO tokens as thevoting weight.

But here it says about preventing influential accounts from exerting decisive impacts on content voting weight.

RATING_FACTOR = 2, i.e., the voting weight will be doubled by consuming 10x coin days. On this basis, voting weight remains positively correlated with the consumed coin days, which prevents influential accounts from exerting decisive impacts on content voting weight.