Are maketing fliers allowed to use fonts that look scuffy--like from an old typesetting machine--even if they were put together on a computer? Maketing materia

Are maketing fliers allowed to use fonts that look scuffy--like from an old typesetting machine--even if they were put together on a computer? Maketing materials are always in an arms race, a new graphic design trend comes out that takes a lot of work and becomes a quality/investment signal, then people figure out how to automate it and it suddenly looks passe.