Leaving the OP aside, as it is crap. Bitcoin can be modified, it was an experiment but was executed very well. Its being developed still but its slower to adopt new ideas as the single most important thing is to keep it secure and operational. Sure it does not have claims of high TPS and looks a bit old but what little it does, it does it well. Trust is key with DLTs. They are trustless but at the end of the day its software developers write and you must trust that software. The fact that Bitcoin has been around for 10 years and only had some minor bugs here and there is what gives it strength and empowers trust. You are much better off trusting Bitcoin then any other public blockchain. It has a good track record for being secure. To me, ethereum has these properties as well. If the marketcaps of these coins say anything it is how much people trust the code.
That being said, leaving scams aside, we are lucky we had the ICO phase where money was thrown at project with just ideas. Its a normal evolution phase and even if most of them die, we experimented and learned about ideas that work and those that do not. We are doing the same things in science, throw money at ideas not knowing if anything will come out of them. And if it doesnt, thats fine.
If any of this projects (like Ethereum) comes up with a better idea (i.e. PoS) they might have better properties then Bitcoin on day one, but it will take time to earn trust. Trust in the software.