Is the placement of scripts and css in the head critical for SEO?

Question

css

I used, therefore, different seo analyzers - and they swear at the fact that css and js are in the head, and they should be moved to the very end of the html code.
Question: is it really so critical and should it be done at all?

Answer 1

Search engines take into account behavioral factors
Page loading speed affects user behavior The
location of scripts in the page code affects the order in which they are loaded and the speed of displaying the page as a whole.

Answer 2

Scripts can be below and do not write them if they are not used. And it's better to write CSS in the head - it's not critical