The GP is not saying the small entity pays the bond. The GP is saying the big entity that wants the content taken down (in this case Microsoft and TracerAI) pays the bond, and forfeits it if a counter notice is issued.
Big companies regularly rip off small creators. Even if the copyright theft is incredibly obvious, a big company has the funds to drag out the legal proceedings for years. Do you have that kind of money?
You do understand that corporations aren't the only entities who produce content and file copyright claims, right? Independent artists, authors, developers, etc. all need to be able to file claims too, and they're already much more vulnerable. I hate the current copyright regime as much as anyone, but the solution can't be one that makes it even less helpful for independent creatives and even more abusable by corporations.