I disagree with your statement. It would in fact be: scientists create unnecessary new notations and that causes a lot of fragmentation in the science community

I disagree with your statement. It would in fact be: scientists create unnecessary new notations and that causes a lot of fragmentation in the science community. They all try to solve one thing which is do science. On the other hand I would agree that some new notation could create new ways to see things that were not possible with the old notation. I think in the long run we're ok with many programming languages. Whatever is useful will survive and what isn't will die out.