If bitcoin follows the current market history then there's a possibility that we will see it increase threefold like what it did last bullrun so there's a possibility that bitcoin will go more than just a 100k but I could be wrong though, I don't know where you got your notion that 2024 is going to be the last bullrun because afaik there's still a lot of bitcoin yet to be mined.
If you remember about the last bullrun that ever happened to Bitcoin, of course speculation for a price of $100K is not excessive for Bitcoin. But when it is said for next year, I think Bitcoin still needs some significant improvement in this year so that next year Bitcoin will be at a much bigger price than now. Because if it's still in the $30K area, of course it will be very difficult for Bitcoin to reach $70K again when it enters the bullrun period next year, although it is still very possible for Bitcoin to happen.