If they just used *realistic* numbers (by sandbagging them, as pretty much every other manufacturer does), it wouldn't be an issue, but of course that would make their vehicles look less impressive.
Even the Volt was underrated vs what it was actually possible of getting. I got north of 65km a few times out of my 2011 (at 8-9 years of age, at that) which is rated for 55, and have routinely got 100+ out of our 2017 in the summer, which is rated for 85km.
It reminds me of a few select EV manufacturers at some point in the past which were using (IIRC) the Japan testing standard for their range estimates for cars being sold in North American, which ended up with with even more wildly optimistic range numbers on the sticker that suffered something like 50% deflation in real world north american conditions. I forget who that was now (and a few cursory google searches doesn't turn it up), but I remember it happening and being one of the many things that the anti-EV crowd latched onto at the time.
Meanwhile, Tesla has a team of people out there squashing complaints about their stated ranges not equallying reality. Forgive me for thinking Elon is just a liar, in the end.