Not sure what you mean by "serious", but this is well known in design circles. Maybe this[1] will convince you?
Typography is visual design after all, and is not any different from other design elements we see all around us. It's obvious that it has an impact in how we perceive and experience brands, and the source of any text we read.
[1]: https://www.monotype.com/company/news/monotype-study-shows-t...