> An LLM only learns through input text.

This is false. There already exist LLM which understand more than just text. Relevant search term: multi-modality.

> It doesn't have a first-person 3D experience of the world.

Again false. It is trivial to create such an experience with multi-modality. Just set up an input device which streams that.

> So it can't execute physical experiments, or even understand them.

Here you get confused again. It doesn't follow, based on perceptual modality, that someone can't do or understand experiments. Hellen Keller can be both blind, but also do an experiment.

Beyond just being confused, you also make another false claim. Current LLMs already have the capacity to run experiments and do so. Search terms: tool usage, ReAct loop, AI agents.

> It can understand the texts about it, but it can't visualize it, because it doesn't have a visual experience.

Again, false!

Multi-modal LLMs currently possess the ability to generate images.

> And ultimately our physical world is governed by physical processes. So at the fundamentals of physical reality, the LLMs lack understanding. And therefore will stay dependent on humans educating and correcting it.

Again false. The same sort of reasoning would claim that Hellen Keller couldn't read a book, but braille exists. The ability to acquire information outside an umwelt is a capability that intelligence enables.