That is the fundamental problem with the ID explanation. Just think about how complicated it is to explain how an intelligent designer could be constantly designing new genetic arrangements throughout the history of the Earth. Every new species excuse me "kind" would have to be redesigned. That intelligent designer would have to explain why so many errors in the genetic design that cause cancer and other diseases. Why have variation? Why would designed organisms go extinct. The few reported yet explained "gaps" in evidence for evolution this is nothing compared to the complete lack of explanation offered by ID proponents. Find a reasonable explanation that supports what is known and present it.
I don't see why is this a "fundamental problem"
For example it could be that God tunned the environment such that organisms would receive the correct mutations in the intedebd place and time. Such that humans would eventually evolve
Or it could be that organisms evolve mainly by natural mechanisms with some divine interventions every know and then
Or it could be that God set the correct initial conditions such that humans would eventually evolve
I don't claim to have evidence for any of these, but I don't see why is this a fundamental problem. There are many ways in which a designer could intervine.
Why would designed organisms go extinct
Why not,? Elaborate an argument, provide your premises.... How do you go from some animals go extinct to therefore I'd us wrong?
Why is that a fundamental problem, please elaborate an argument