It is not permanently closed. Google only shows "closed due to flooding." Having extensive knowledge of the property and dealing often with the Land Manager, I can say they are dedicated to having this jewel of a trail system available to the public.
There have been challenges with the very heavy daily rains that our area has been deluged with, and when that happens the swampy areas and creeks massively overflow. Unfortunately it takes some time for that to soak into the ground and recede.
Meanwhile what you have is some very muddy sensitive conditions in several areas, and some not so bad in others. Getting to those not so bad places often means damaging the very muddy sections for months of volunteers working to repair it.
With Fat Tire Fest coming up in November - about 8 weeks away - there will be more than enough work to scramble together and get done to ensure a fun ride for all for the event.
Boyette is not closing permanently. There is plans being put forth for a new expanded parking location that has been easily 8 or 9 years in the making; property has been purchased for that purpose. There is plans for new trails. There is plans for old trail revamping.
Safe to say the place is here to stay.