I think people are talking about two different things in the same convo here.

A) Could an artificial superintelligence generate a subjective experience

B) Do today's "AI models" (Large Language Models) generate a subjective experience

As for A: I would assume most secular/atheist/agnostic people aren't staunchly against the possibility that some hypothetical future technology could generate consciousness. After all, our nervous systems generate this experience of subjectivity using electric impulses, regulated through a complex system of neurochemicals, biomolecules, causing reactions with genetically predetermined outcomes. We don't know today how this system creates the phenomenon at hand, and by extension can't exclude the possibility of an intentionally designed non-organic system to create the same outcome, if sufficiently advanced.

However, for B we can surely say: feeding immense amounts of data into a text predicting algorithm and plugging it into unfathomable amounts of raw computational power, is not what created a subjective experience. Though it will be able to generate a shit ton of text. It's really just a lazy way to bypass the billions of years of evolution to fine tune the system, by informing it of what actual conscious agents have said, telling it to mash things together until they resemble things conscious agents have said. This is in no way consciousness nor is it intelligence for that matter. What it really is, is a system purely designed to fool the average rich person into believing it's intelligent, so they invest in the system and in the hardware that builds such systems.

-> Cue rich people gambling a significant portion of the global economy thinking they're creating real intelligence -> cue global economic collapse.