I looked for traces of Satoshi on the Internet. I've read all of his posts since 2009. He is sublime. If you read his writing, you can feel his passion. I have a little bit of bitcoin. I'm pretty relieved just to have Bitcoin. But if you look back at history.. Yahoo lost to Google. Yahoo was great, but Google was even better. Satoshi gave us a gift called Bitcoin without any greed and went somewhere. The problem is, new geniuses are born all the time, and technology advances. Bitcoin is not physics. It's blockchain technology. Which means that bitcoin is not an immutable law. A better technology than Bitcoin could emerge. What should we do if someone gives us a better system than bitcoin as a gift and leaves? It performs better than Bitcoin, and it even has the perfect decentralization of Bitcoin, which we value highly. Bitcoin was created in 2009, and now it's 2023. Cars made in 2009 cannot be better than cars made in 2023 or later. What if someone with as much genius and passion as Satoshi is creating a system better than Bitcoin?
This is not new for bitcoin. A lot of potential projects are born in the market everyday but until now, not any single project has replaced the position of bitcoin. That is the same with the situation you have cited OP. It's not actually a threat for bitcoin if something new better has come up, because the real challenge is if that project will come to conquer the crypto market for more than a decade just like bitcoin did. Of course, there will be higher potential coins that will arise in the market that has better innovation compared to bitcoin, but the problem is if it will get bigger market demand higher than bitcoin since we all know a king will always be a king, and bitcoin will always be the lifeblood in the crypto market ever since.