It's true, the market is very different this time thinking about the users number. But I think there is an inedit event this time we didn't have in 2013-2015, the government's offensive against Bitcoin. It can reflect negatively over Bitcoin price, somehow like the incident with the mentioned exchange on that time. I don't know how strong is this factor and how it could affect Bitcoin adoption, but it worries.
What I believe is a good method to counter threats, it's to have a good number of investors from everywhere, because if a country attacks Bitcoin, it won't hurt a lot, as there will be many other people from many other countries to balance the market. We feel the pain now because some countries have great, unproportional influence over Bitcoin and if their governments do something against the digital currency, the impact is much stronger.
Besides decentralized, Bitcoin is being centralized in some main countries.