The image with the bird and the mailbox I generated directly from DALL•E. The asset on the Stripe checkout page for the Assistant plan I generated using Midjourney. All of these assets are placeholders while my partner is working on drawing a custom mascot to represent Mel.
I didn't intend to criticize the art itself, just mentioned why AI website art has that recognizable look, plus that usual soft-focus glow shadow. I think it looks fine for a company website.
That reason has two names: Dribbble and Behance. That's where all this 'AI' website art and assets come from.