I don't think it is "drastic" and ever since Ironman had taken over this is always one of their long term direction they are aiming to go to.
You said before that "ample time must be given for runners if they ever were to make such a switch, so that runners can have time to adjust." Well, they have given 2 years liao. Enough time given to runners to adjust so why still "drastic"?
AutumnRunner must have just come out of deep hiatus as can see his post is now everywhere.
This year's Craze Ultra, no more 100 miles! Also, Simonleng is the first one to register and has gotten the BIB #1. So surely you can expect to see him there.
May be to satisfy everyone once and for all, who's eager to see you take part in Craze Ultra, you can consider joining the new 27km category. 😂