Yo,
So apparently there's like 4-6 million bitcoin that are lost and gone? Just curious if there was any ideas or plans to update the protocol to replace the lost bitcoins if there was a consensus, if that is even possible.
Lost Bitcoin refers to all those wallets that wallets are currently inactive. However, there are many investors who have Bitcoin holdings in their wallets but they have not yet activated their wallets. But whether it will be possible to reduce the lost Bitcoin total supply through any process, only those who are Bitcoin developers can say for sure. However, for the time being, it is not possible to say with certainty whether all these changes or updates will be possible without Satoshi Nakamoto.
I don't understand what you mean by reducing the total supply of lost Bitcoin. Lost Bitcoin are lost forever and to reduce it should technically mean recovering the lost Bitcoin and that I don't know how possible it is. Assuming it were to be possible, I don't think Satoshi will play a part or be willing to get involved in it considering that he has gone away for a long time now after creating Bitcoin. There are many other devs that can attempt to recover them should there be a way of doing that. What I do know is that those coins are gone and gone forever, and if anything changes about this, it will really be a huge news that will shake the market accordingly.