Yes. That's exactly how the iPhone XR's battery life has ended up on a pedestal despite it not being all that impressive. I saw all these anecdotes of the XR far outclassing the 8 Plus, but GSMArena's controlled test shows a 30 minute advantage at best and a 2 hour disadvantage at worst. A couple of randos on forums compare their brand new iPhone XR to their worn out 8 Plus and declare the phone is the be all and end all of battery life, and then confirmation bias and the echo chamber effect takes care of the rest. Anecdotal "evidence" is wholly unreliable because people will believe whatever suits them.