What if you link it to a playlist that starts with your song?
It would be wild if a YouTuber did some documented video tests on this issue at some point.
I think that you are a bit too hung up about what happens where on the internet, especially considering that your complaint is about bad faith actions of the large platforms.
Not saying you're wrong, I've just personally never had issues with them, and I work with lots of share links from a variety of artists.