I've seen papers claim that there are anywhere from 12 to 40 competing definitions (https://philpapers.org/rec/VIMMAT), or, more accurately, there are something like 12 to 40 different aspects which all relate to "consciousness", which is very clearly a family resemblance category.

"Is X conscious or not" is an entirely unserious question today, unless this is just a headline followed by actual (and explicit) examination of the various aspects of consciousness being discussed. But, even still, LLMs are probably only conscious in like 2-3 or so ways, most of those meaning broadly "intelligence", i.e. reasoning, problem-solving, etc. When it comes to anything experiential or embodied, AI might eventually get more of these, but LLMs based on recursively applied linear algebra are clearly missing too many core aspects of consciousness to be considered conscious in any broad sense.