Some proteins might act as a sensor, binding to some other protein when triggered, in turn causing some action to occur.
Hand-wavey comments such as yours evidence a profound lack of appreciation for what such videos signify.
We are very, very far from really understanding how everything actually works, though.
Whence comes this assumption that life may be reduced to a set of Boolean logic rules?
Such people either have no clue how computers work or no clue how biology works. (Or both.)
“Some proteins act kinda like if/then statements, so therefore the transformation of a single cell into a salamander is basically just a computer program.” You might as well say “My computer has a water-cooled processor, so it’s basically a salamander.”
Your comment only makes sense if you postulate that life cannot be understood.
Your counter to life being machines is just baselessly discrediting those of the opinion. Ad-hominem.
Considering a cell to be a single machine does not make it equivalent to another machine (a computer), and certainly doesn't make that other machine equivalent to the millions of cells we just saw divide. "A is a machine, B is a machine, therefore A is B" - a false equivalence.
Cells are conclusively machines, by the definition that they execute a fixed purpose dictated in whole by the parts it was made of - parts that we can change to modify the operation of the machine, a well studied subject used extensively in e.g. pharma (reprogrammed bacteria is how people get insulin).
That conscious life is poorly understood does not somehow change the fact that the only building block used to make it in nature is a small biomechanical automaton.
While we love to glorify our own existence and capabilities, our recent advances in LLMs also show how simple machines - even if significantly flawed due to practical resource limitations and intentional design limitations - can end projecting a convincing mimicry of our conscious behavior, despite having a simple, phrase-completing nature. It might make you wonder what simple initial purpose might dictate our behavior.
The idea that this should be backed up by simulating a large and complicated multi-cellular organism is a bit ridiculous. Even complete understanding would not imply that something is easy to simulate.