In photoshop or even text applications like Word you can select a font by typing its name in the font search field. For example I want the font Myriad Pro .. I type "M" and the fonts if the initial M appears . In Affinity Photo/designer you have to go looking for the font, if you have many is a boring job. CorelDraw have really good font manager too...
Could be just like him. Or be able to select different ways to find fonts. I for example use only some fonts, so a font manager like photoshop is good for me. On the other hand, for my wife the ideial would be an equal to the coreldraw she is a freelancer designer and works with several fonts types. CorelDraw font finder has preview of the fonts, which is great when working on several projects. I think it would be perfect for the Affinity Designer.