if a user searches ‘onlinecasinobonuses’ in google and there is a website onlinecasinobonuses.com so what are the chances that onlinecasinobonuses.com will be on first page of google search regardless of if any SEO for onlinecasinobonuses has been done or not.
There is some advantage, but you still need to do some SEO work to get the website ranked and depending on how competitive the keyword is, the less advantage will be gained.