> we should be able to use BCI to feel exactly what it's like to be a blue whale (and vice versa.)

One day we will gift these whales the experience of Italian brainrot and Skibidi toilet.

Or if you can ask it your doubts?

"No copyright infringement intended"

Also see https://sandspiel.club

Though my favorite is Powder Game: https://dan-ball.jp/en/javagame/dust/

It has a little man you can control to jump around the landscape!

I took at stab at training Tesseract and holy jeebus is their CLI awful. Just an insanely complicated configuration procedure.