Stop words in SEO are words that do not add value to the text and do not affect its meaning, but which nonetheless significantly increase the size of the database of indexed pages. That is why stop words are ignored and filtered by search engines when indexing and assessing the relevance of a document to a search query. The more stop words used on a page, the less useful its search engines will find. Without stop words, it's almost impossible to write a coherent, well-read text. Text in which there are no stop words at all is dry and looks unnatural. But text oversaturated with stop words is also bad for SEO. Try to keep a balance.