My guess would be that if you've never had trouble keeping things running either they're not real complicated or you don't have a lot of users. And that statement applies to any technology/platform. If you build things long and big enough, you'll fight the technology at points.

That said, even if you have a ton more professional experience than your response suggests, I don't trust people who say never glibly, nor does your question seem genuine.

You're implying the guy's a newb and it's him not the technology--just say as much.