Actually, this is only correct for switches purchased NEW after December 1, 2015.
The way HP's warranty works is it is based on the original purchase date of the hardware. Legally, HP is obliged to provide warranty under the terms at the time, not under future dates. Though this general depends on your country, in Canada and the US this is true.
What this does mean is if you can find a model made before December 2013, you will be entitled to lifetime support, even if you are the 2nd, 3rd or 4th owner. However, after this date, if you are not the original owner, HP will not honor the warranty.
I have personal experience with HP on this. I own a old HP5406zl with many modules. It was originally made back in 2011, and the modules are from 2012. HP provides me with support, even though I bought the switches in May of this year. Warranty is tagged to the chassis, not the modules. So, if you where to purchase new modules today, they would come under the warranty for the original unit, as that is how HP identifies you in the system. I had to log a case to replace a defective OneServices module, and they did it no questions asked.
The trick is knowing the original purchase date. Old beat up HP is likely lifetime, whereas newer if probably original. YMMV, and in full disclosure I'm former HP, so, knowing warranty was part of what I had to do.