This is true, but you will have to give up your mixer EQ for example. You can of course still use EQ in Cubase, but I personally quite like shaping my sound on the hardware mixer, so I just have to do the small adjustments in Cubase.
Also make sure the audio interface you pick can supply phantom voltage on the mic inputs in case you ever want to record a condenser mic, as well as a high-Z/instrument input for direct guitar recording. If you’ve got those, you don’t really need a mixer anymore for your recording.