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.
The $100k target is a pretty modest target for bitcoin and I think the new ATH will be much higher than that. But I think like you, if we still believe history will repeat itself, then 2024 is not a bullish year yet. If I remember correctly, the bull season will only come 1 year after the halving takes place. That means we will wait until Q2 2025 to see strong market growth, and bitcoin will make a new ATH in Q3 2025 as always before we enter bear season another in 2026. Of course, these are just predictions based on history, there is no guarantee everything will repeat.