I agree that this is a bad idea. Bus travel sucks. It has basically all of the downsides of air travel with basically none of the upsides, minus cost obviously. Without knowing what countries you’re going to be going through it’s harder to say. Bus stations in my experience can be difficult to navigate in my language, in a language I don’t know I’d be even more concerned. Usually you can eat food, but like airplanes try to be considerate about what you have. Avoid fish, common allergens, smelly food, etc.
Finally consider that over those 36 hours you’re going to have to either bring food, or buy it, you’re losing time wherever you’re transit, and are at the mercy of the bus time tables instead of waiting on a single flight
Reading the headline my first thought was “wait, didn’t I solo old content for gear and mounts?” but here I see this is about soloing current content. As an ex-wow current FFXIV player I think this is a great move. Giving players access to more content is great, especially if it’s story relevant. They still keep high-end gear and challenges for hardcore players and there’s still regular progression content for everyone else