The issue I see is that there is not really a 'standard' way of stating range that is also useful and meaningful in all situations. This applies to ICE vehicles just the same, but is perceived as less of an issue - at least partly due to the baseline efficiency being much worse.
However, EV's in my opinion, being more finely balanced energy-wise as well as having more 'hidden clauses' depending on owner's awareness of technology factors, do need better and more consistent energy info.
My first EV's were Renault Zoes. They were 22kwh and 40kwh. In summer they reported around 4m/kwh and in winter 2.5m/kwh. They had a simple range estimate figure that tracked my recent average m/kwh figure. If I turned on the heating or a/c, the range immediately adjusted accordingly. I found that perfectly useable, although it did not take into account elevation or sudden changes in driving style - but that would be the same in the ICE world.
The MS on the other hand is potentially better at taking elevation into account, but the range indication (other than on energy graph) is likely way off and sticks pretty rigidly to a calculated hypothetical value. In practice, it hasn't been an issue since the charging network is more than adequate at dealing with any route changes, anomalies and any energy implications.
As EV's become more ubiquitous and still have to make do with less than ideal charging infrastructure overall, having uniform energy metering and reporting (well understood by most owners) will be very important.
Unless you are familiar with the software, the following might not be worth time interpreting, but the point is there are many factors to take into account, and lots of non-evident data needed before you can draw useful conclusions.
Kona EV, 64kwh. Recent data suggesting actual performance hitting over 4m/kwh in cold weather. Minimal battery heating. Gross very close to net.
Regardless of the validity of data or otherwise, the cold weather data suggests around 216 wh / mile, which beats the MS best summer figure by a fair margin. This is reflected in my real driving experience over most journeys but charging the Kona is significantly slower!
MS R LR. 100kwh.
Overall figures:
Teslamate data from a fairly level long steady run at 70mph in winter weather. Mimimal heating / a/c use. By either range calculation approach no where near Tesla's 350 mile plus.
Then here are a couple of winter runs in UK and a summer one. Different routes, but similar driving. Huge difference in wh/mile between winter and summer. And this doesn't even reflect any energy used heating the battery.
I appreciate having access to this detail for the MS so that I can see what is going on, but I really think average owners need a far simpler, more dependable and understandable way of relating to the realities of the variable energy profile of their cars.