While I am sympathetic to the government's and non-Cowichan tribes' issue, amending the DRIPA legislation to make it weaker and easier to weasel around isn't the way to do it, if the information in the letter is a true reflection of the proposed amendments.
Edit: Sounds like Eby's taking a different path (something along the lines of waiting for the Supreme Court case to resolve before fully implementing DRIPA) than the one proposed in the letter. I'll have to evaluate Indigenous leader and member reactions to that.