What are the disadvantages of uploading to multiple hosts? Thus you can say benefit from YouTube's funding and discovery and use say Patreon for stable funding

What are the disadvantages of uploading to multiple hosts? Thus you can say benefit from YouTube's funding and discovery and use say Patreon for stable funding, and PeerTube (or Vimeo, &c) for alternative storage. Add to that a website with a nice RSS feed of your videos, and some social media; shouldn't you be ready to go as a professional video artist / content creator with a nice, redundant distribution structure?