Microdosing does not usually cure depression/ burn-outs. It is a tool or support to help you heal your own depression. You are the main actor in this process, not the microdosing. It points to what you need to work on. When you realise this, (as with all therapies and methods) then you can certainly alleviate depression, but it is not a quick fix for all problems.
With a realistic view on microdosing you can often get the most out of yourself, which can certainly contribute to your healing process.