I agree that we as a community need to start looking at alternative sources of ayahuasca plant materials. Specifically, things that will grow in more temperate environments. I've read in a couple places that the Caapi vines being harvested for ceremonies in the Amazon are younger and younger. The older thicker vines are prefered, but between the booming ayahuasca tourism industry and all the Caapi being sold online, many of the natives are left harvesting thin and immature vines from the jungle. Syrian Rue is the easiest replacement, but is not ideal since it has large amounts of harmaline and getting THH from it requires some chemistry. For DMT, bundleflower and prairie mimosa seem to be promising sources.
And parallel to all this, I think we need to stop hijacking their cultures. We need to do the difficult work and create our own. We are on the cusp of bringing the knowledge of our ancestors back in to mainstream culture but if people keep trying to merge incompatible pieces together, the merging is going to be a very painful train wreck like experience. You can't just take the culture of the Amazonians, the Incans, the Vikings, the Celts, and Native Americans and try to merge them all together into a modern western context and expect anything other than a failed hippie commune. We need to stop with the chemophobia. We need to stop blindly following mythologies. There is no "magic" to the plants other than that they contain certain chemicals. IF there is any magic, the magic is in the chemicals and the plants are simply carriers that we employ to attain such chemicals.
Mother Ayahuasca is a mythology. MAOI+DMT is the reality.