Yes, you wouldn't get anything like what he shows in all these pictures if you were walking a BigGAN or StyleGAN latent space rather than the 'latent space' of

Yes, you wouldn't get anything like what he shows in all these pictures if you were walking a BigGAN or StyleGAN latent space rather than the 'latent space' of Stable Diffusion 1 (which isn't really a latent space to begin with). So that rather undermines any connections he might want to draw to grander things than just SD1.