To start, I didn't know Zulip and it looks like a clickbait headline. Then, you read the article and you stumble upon a few well-known anti-blockchain arguments

To start, I didn't know Zulip and it looks like a clickbait headline. Then, you read the article and you stumble upon a few well-known anti-blockchain arguments, that are designed to appeal to anti-something crowds. "We believe that doing so would inevitably compromise the integrity of our 100% free and open-source project." Most blockchains projects are fully 100% free and open-source projects, even more so than other domains in software. But uniquely, the data is 100% free and available too! "Cryptocurrencies have a significant negative impact on the environment." That is a PoW-only concern, which is well-known and is being technically addressed by PoS. Also, mining for PoW currently uses excess electricity which is *wasted anyway*. At that rate, Google and Facebook use a lot of energy too: Who needs to see videos and chat online with friends when we should all read books instead? "Today’s reality is that cryptocurrencies are enabling massive amounts of criminal behavior". Probably no more than regular dollars: Everything is visible on blockchains (except some specialized chains) and it is poor judgement from criminals to use them. They will get caught, more quickly. Bad state and financial actors can much more easily hide things in the current financial world... look at all the Panama Papers and other ICIJ leaks! "The lack of effective regulation of crypto assets puts people at high risk". The current financial regulations are a joke: You can use leverage on RobinHood and lose money at this casino pretty quickly. They will also cheat on you: restricting you to sell or instead selling stock you own without your consent, selling your order flow so financial giants can make the best of you! If you naively believe regulations are here, we're protected, think again. Most fines set by the US administration are used as a political tool (for instance against the French bank BNP Paribas for doing business in Iran). That said, blockchains regulations will come as the sector matures, you can just hope that they will be written by people who understand the technology. Edit: Since I'm being downvoted, please state why in a comment!