Well... Yes. This is what researchers do. It's part of science. Now you take the new data, form a falsifiable hypothesis, and do empirical experiments. Publish your research. The cycle is complete
The comic is mostly referring to physics crackpots. People outside academia who rejects current established physics in favor of their own pet theories.
Like how I reject quantum superposition in favor of my pet theory that it's really only in one state and the superposition is just a convenient way to refer to the chances of each when you can't observe it because your observation tools will interfere with it?
It’s not nearly all they do. Sometimes you have to get off social media. This cartoon is so obviously about the lowlife chuds who don’t understand that anyone can pretend to be anyone on the internet and also write anything.