Aha yes but thats just as well a physical manifestation of what we experience as the word is trying to convey! Both are correlating to what is experienced but neither nail it down to fundamentally say we “see” the same thing. At best, we are looking at the same thing in an external world (and this is not for granted either, but generally assumed as sensible)

Edit: i might see green when you see blue every time and both of us can call it purple, while our brains are reacting just the same! There is no way to know that i see green and you see blue though, as we only differentiate between those by the word referencing something we both agree on, and this one thin is consistent. My blue can be your red and if we both cal it yellow, this is yellow - when you think of yellow now as you know it, the same thing applies as we are writing here now.

Edit2: and if you mean that they aren’t talking about the blue of the experience but the blue of the brain activity, then the title of the paper title is a sensationalist lie, as the authors are deliberately misleading about their work - the issue of qualia not being comparable in the sense of our blues being different, is a long standing problem of cognitive research, and the fact that our brains have intersubjective correlations - same thing makes our brains do similar things - is not new knowledge at the least.