Will it? I think you and I are possibly using different working definitions of peak oil. I suspect they definition you’re using is “at some point, production of oil will peak and then decline,” which, yeah, I don’t think is in dispute. But I think it’s not ‘peak oil’ unless that peak is driven by supply-side limitations. If oil production peaks, as it has for many fields, countries, and even regions already, because we’re simply tapped out, that’s peak oil. If production begins its decline because we don’t need as much any more, that’s not peak oil.
The reason I use the narrower definition is because it fits what people think about when they think about peak oil: spiking prices, potential military conflict, the need for crash programs to reduce oil demand, etc. A demand decline would see none of these. Under the narrow definition, peak oil is not certain to happen. I would even venture it’s not even likely to happen. But that’s not really what this thread’s about.