I don’t get what your point is. Are you trying to generate images with Stable Diffusion and upload them to Shutterstock? Because that’s the only situation when the thing you’re complaining about applies. Nobody is stopping you from generating images and using them. What they are doing is preventing you from generating them and then trying to profit from them on the Shutterstock platform, unless you use their tools. Why is this an issue, in your opinion?
The enjoyment of going to parties typically relies on the attendees of the party and how much you like or dislike them. This specific party is full of people who bought monkey JPEGs and turned them into their entire personality. So, presumably, I would not like this party.