A more reasonable answer, though, is "no."

I've technically gone through random tutorials and trained various toy networks, including a GAN at some point, but I don't think that should really count. I also have a ton of experience with neural networks that's decades out-of-date (HUNDREDS of nodes, doing things like OCR). And I've read a bunch of modern papers and used a bunch of Hugging Face models.

Which is to say, I'm not completely ignorant, but I do not have credible experience training GANs.