I saw that as well. There were only 330 riders when I rode BTC in 2017. I’m sure the organizer lost lots of money that year. I understood that his daughter was going to take it over in 2018 but it sounds like there still weren’t enough riders to pump in the cash needed.
Regardless its its disappointing to lose a reasonably priced supported tour in CO. Their rest stops had the most amazing assortment of goodies of any ride I’ve done. The routes were always great and the ride was well supported.