Because they are trying to discuss a difficult-to-define concept - consciousness.
The difficulty and nebulousness is intrinsic to the subject, especially when trying to discuss in scientific terms.
To dismiss their attempts so, you have to counter with a crystal, unarguable description of what consciousness actually is.
Which of course, you cannot do, as there is no such agreed description.
[0] https://www.labyrinthbooks.com/the-feeling-of-what-happens/
Ordinary materialism is mind-body/soul-substance subjectivity with a hat and lipstick.
I find myself believing in Idealism or monism to be the fundamental likelihood
Consciousness is a characteristic of material/matter/substance/etc.
There are not two types of stuff.
It is epistemologically rigorous. And simple.
- I assume you as a materialist you mean our brain carries consciousness as a field of experience arising out of neural activity (ie neurons firing, some kind of infromation processing leading to models of reality simulated in our mind leading to ourselves feeling aware) ie that we our awareness is the 'software' running inside the wetware.
That's all well and good except that none of that explains the 'feeling of it' there is nothing in that 3rd person material activity that correlates with first person feeling. The two things, (reductionist physical processes cannot substitute for the feeling you and I have as we experience)
This hard problem is difficult to surmount physically -either you say its an illusion but how can the primary thing we are, we expereince as the self be an illusion? or you say that somewhere in fields, atoms, molecules, cells, in 'stuff; is the redness of red or the taste of chocolate..
a materialist isn't saying that only material exists: no materialist denies that interesting stuff (behaviors, properties) emerges from material. in fact, "material" is a bit dated, since "stuff-type material" is an emergent property of quantum fields.
why is experience not just the behavior of a neural computer which has certain capabilities (such as remembering its history/identity, some amount of introspection, and of course embodiment and perception)? non-computer-programming philosophers may think there's something hard there, but they only way they can express it boils down to "I think my experience is special".
It’s like explaining music vs hearing music
We can explain music intellectually and physically and mathematically
But hearing it in our awareness is a categorically different activity and it’s experience that has no direct correlation to the physical correlates of its being
The common thought experiment is the color blind researcher experiencing color for the first time(Mary the Colour Scientist https://en.wikipedia.org/wiki/Knowledge_argument)
I’d bet bats would enjoy marrow too if they could.
EDIT: removed LLM irrelevancy, improved formatting
Basically his answer to the question "What is it like to be a bat?" is that its impossible to know.
Indeed! Makes you think: maybe it's a bug rather than a feature.
I do mostly agree with that and I think that they collectively give analytic philosophy a bad name. The worst I can say for Nagel in this particular case though is that the whole entire argument amounts to, at best, an evocative variation of a familiar idea presented as though it's a revelatory introduction of a novel concept. But I don't think he's hiding an untruth behind equivocations, at least not in this case.
But more generally, I would say I couldn't agree more when it comes to the names you listed. Analytic philosophy ended up being almost completely irrelevant to the necessary conceptual breakthroughs that brought us LLMs, a critical missed opportunity for philosophy to be the field that germinates new branches of science, and a sign that a non-trivial portion of its leading lights are just dithering.
That is what is being discussed using the "what it's like" language.
Why they focus on feelings is a different issue.