BTC is a consistent project that allowed cryptocurrencies to even exist and start their way to the top of the world. In my opinion in the next 5 years BTC will still be a Top 3 coin, because everything that happens in the crypto space is always connected with BTC and passes through it.
It´s a good point from @ned, if the benefits outshine the downsides the choice of going forward with SMTs is pretty obvious. I think SMTs are a super obvious choice to advance for and add more value to the blockchain.