As Mick mentions in his comment, "to deem fit" is slightly aged-fashioned although not, I think, sufficient that you should not learn how to make use of the idiom. I would not get in touch with it "Victorian" English, as it is a phrase that sees normal use even now. https://keeganahlpt.tokka-blog.com/37120892/the-smart-trick-of-cat-diet-guidelines-dubai-that-nobody-is-discussing