My take on dark matter is scientists are in the dark about what is going on so they create a mathematical black box to fudge results. The Webb space telescope observations already have scientists scrambling to revisit what they think they know..
There’s several theories about what’s going on there. The scientific community has latched onto dark-matter because the top half-dozen Ph.D.’s in the field have said that is THE theory and you’ll be blackballed if you suggest something else might be going on.