As long as you are happy with your sound and you have the soundtech happy with the signal he's receiving from the bass, what's the problem?
Both on-board and pedal preamps are for quick and rapid access changes on your sound, but the main difference is that, on a pedal preamp, it's really quick to "activate" the tonal changes you need, specially if we are talking to do it during a song (but you need stoop down to change settings).
For on-board preamps, in my opinion it's easier to do some small EQ changes between songs (it easier to change settings compared to a pedal, and an amp, specially on big stages), for example, boosting a bit the highs for an aggresive song, and cutting highs for some soft stuff, as long as it serves the song and don't mess with the final mix too much is fine.
But the active bass thing is way more complex than that, historically and technically, I'm talking about on-board preamp as well as active pickups (another preamp!) where you have a already buffered and low-Z output (being possible to run long instrument cables without the cable-capacitance thing, and almost "full-range" signal having more tonal options to mess with.
In other hand, the power amp EQ and most rackmount preamps can serve as the "core tone" of your bass rig and it has to be setted right in order to sit right on the general mix of the band.
Of course you can use any of those "pre" in other ways, as long as it works, there's no rules, you can even have an active bass just straight into a DI and then to the monitors/FOH and mess with the EQ "on board" depending of the song needs.