most things seem to have settled on this, but tabs are so much better for accessibility. programmers with bad vision can have trouble differentiating smaller indentation levels, while some of them just bump the font size up so high that 4 spaces takes up too much screen space. each one can set a tab width that is comfortable for them. https://alexandersandberg.com/articles/default-to-tabs-instead-of-spaces-for-an-accessible-first-environment/ has some good arguments

with a forced formatter and a configured editor there really isn't any argument for spaces