On its face it's typical FBI thuggery, but what it also does is authenticate the diary itself, which the media spun as "Russian disinformation." Remember, in these diary entries Ashley basically outs Joe Biden as a pedophile.
https://www.dailymail.co.uk/news/article-10170569/FBI-RAIDS-Project-Veritas-linked-addresses-linked-Ashley-Bidens-stolen-diary.html