New technology or innovations are not easily accepted, when that is understood especially when you are an advocate for the technology about to be replaced, you will not criticize those who are yet to accept bitcoin. How well do you think the bitcoin community will accept a new technology that will replace bitcoin? Are we not just going to become the same critics of that new technology even if it offers better opportunities like some people remain critics of investing in bitcoin till today.
We love Bitcoin and the technology for what it has to offer, so I don't think anyone who likes Bitcoin would criticize another system that would offer what it offers and something more. We accepted Bitcoin and blockchain technology because we have been seeing the traditional financial systems for centuries, and we know the flaws and everything they have. Bitcoin isn't flawless, but it's at least better than what exists right now, and I'm sure if another system is introduced that beats it, people will give it more importance than Bitcoin, but only if it truly is better than it, and not just for saying.
What we criticize are systems that are compared with Bitcoin while they don't even come near it. We have been using the system for years, and we know what it is and how good or bad it is, but it is not something that we will prioritize over something that is better than it; at least, I won't do that; not sure about others.
People who aren't ready to accept Bitcoin are still living in the past, or they have trust issues because most people with vintage mindsets think something that doesn't exist physically can't be trusted.