Thorium is complicated. I'd suggest [1] [2] as a good primer on this issue.

[1]: https://www.youtube.com/watch?v=2IqcRl849R0

[2]: https://www.youtube.com/watch?v=baQelfQAH54

The Gobi Molten salt reactor is finished and testing has begun. China thinks that in 2030 commercial thorium reactors will be available.