You seem to be under the impression that if a solution isn't 100% perfect, then it's useless. You see this same nonsense every time someone mentions anything related to security. It's incredibly foolish.
You seem to be under the impression that if it's not 100% useless then it's worth pursuing. The idea of watermarking text is just stupid. It will accomplish so little as to be a waste of time. Depending on how they try to do it, it could also just end up hurting the models in question. We already see evidence of human guidance making the models dumber.
There are malicious actors and non-malicious actors. Criminals fall into the 'malicious actors' category. There is little reason for non-malicious users to want to remove invisible watermarks. It doesn't hurt them, and they benefit from being able to easily identify some generated content. For malicious actors, such as criminals and hostile state actors, having their generated content watermarked isn't in their best interest. Consequently, most people who would want disable watermarking or remove existing watermarks are going to be criminals and hostile state actors.
If you're not doing anything wrong, you have nothing to worry about, wink wink. I don't think you're on the right website here friend. Most of us here value privacy for privacy's sake. To wit, you're wrong that people removing watermarks must be criminals or hostile state actors. They're also people who understand that knowledge is power and that giving unknown 3rd parties excessive amounts of information isn't beneficial to them.