Probably controversial but I'd say it depends what "basic" means to you now vs in 6 months when you've added solar, a DC-DC charger, and suddenly want remote monitoring 😄
Had a similar debate when sorting the narrowboat. Went with the Cerbo partly because I wanted the GX Touch screen and partly because I knew I'd end up integrating more kit eventually. Glad I did — the VRM portal alone is worth it for me, being able to check state of charge from anywhere is proper useful.
That said, for a genuinely simple build — small van, couple of panels, basic loads — a Victron BMV-712 or even just the built-in display on a SmartShunt is probably all you need. The Cerbo is £200+ and if you're not using DVCC, no CAN-connected batteries, no multi-device comms... yeah it's overkill.
I think the real question is whether you're planning to keep it simple forever. Most people don't.
What's your actual setup — how many panels, what inverter/charger? Might be easier to say whether it makes sense. Others on here with van builds will have more specific experience than me with this one.