I don’t believe this chart is fundamentally sound
There is little reason why the Bitcoin exchange rate would level out at a certain USD evaluation. If Bitcoin reaches 10M a coin (210T market cap) it will be in large part due to the collapse of the dollar. Bitcoin will have started it’s transition into Unit of Account, and demand for dollars would be collapsing compared to demand for Bitcoin.
Essentially, the Bitcoin price chart in the vertical part of the adoption S curve will resemble a J, not an S.
I think 10M by 2028 is extreme hopium and would only occur if the US Gov. and broader financial markets almost completely dissolved. But either way, plotting a price S curve makes no sense.