Anything against multiple video backgrounds?

currently building my first site locally using astra elementor and local, is there anything against me using multiple video backgrounds for each page? I like the way it looks at the top of the page i think its very eye catching however I’ve not come across many wp sites that have this sort of set up and im wondering if there’s a reason why that im woefully unaware of?

Also im guessing the speed of the site while using local is not going to be the same as when I go live?

thanks in advance.