“Our findings are generally consistent with the notion that the morphological and behavioral differences between humans and chimpanzees are predominately due to differences in the regulation of genes rather than to differences in the sequence of the genes themselves.”
The headline makes no sense. If the actual genes that are expressed are 98% similar, that is very strong evidence of a close evolutionary relationship. The junk DNA doesnt code for anything so it is free to mutate without any negative consequences so of course it will have less similarity.
Creationists conflate the 99% genetic DNA similarity and the 95% or so similarity between genomic DNA, knowing the woeful lack of education on average of their target audience - they are pretty confident the dupes of their disinformation will not catch on.
They also assume that any non-genetic DNA is “regulatory” and that is not at all true. A lot of it is just “junk” DNA - possibly previously of use, possibly of future use - but currently in the genomic “basement” boxed up in chromatin.