Right now yes, decentralized but really look into what Bitmain has done lately. That is the "they" side I majorly feel is trying to centralize and what Bitcoin Core itself is struggling against. Its not just them though, its these little factions backing them as well. This has been a long 2 year ongoing issue that seems to never resolve. We are now on Bitcoin Improvement Proposal 149? That is 149 BIP proposals yet to be implemented in the course of many years?, well one or two mini adoptions that were needed but in the end its always a back and forth.
My reasoning is this, Bitmain has taken a firm stance that if they don't get their way they will split the coin, that is a very central show of force on the space that should be put in check or we will definitely see a division of central and decentralized mindsets which should have been put in check a long time ago. I am a miner myself but all those fees go straight to the corporate miners not the little guys so its kind of what I see as trouble. It was bound to happen at some stage that a divided way about these things would come into play but its out of hand the effects on the actual users.
I am sure Bitcoin in the long run with overcome this but for now I am heading like a lot of people towards Litecoin for every day transactions, no longer feasible for me with Bitcoin. Guess Bitcoin is more a side holding coin till they get it fixed but there is reasons to be concerned with the miners....they have already stated that they feel entitled to the head of the table in Bitcoin so that feels to me like they are not so about the decentralized movement that many of us came into this for.