This is FUD... Obviously the points you make are valid to consider but it's extremely clear to anyone that has actually spent some time looking at the real-world range of the Taycan that it significantly outperforms the EPA ratings. Spreading uninformed accusations like this is a disservice to this forum and the Tesla/EV community, and it's concerning to see such positive feedback from this forum on a post like this.
Check Bjorn Nyland's range tests (formerly Tesla Bjorn, I think we can agree Porsche isn't paying him off...)
Table at 16:46.
Porsche Taycan 4S PBP - 227 mile EPA range, 264 mile Bjorn test at 75 mph (+16%)
Model 3 Performance - 299 mile EPA range at the time, 243 mile Bjorn test at 75 mph (-18%)
Tested at similar temperatures (2 degree Celsius, 3.5 degree Fahrenheit difference)
If you prefer to compare to the Model S, same test for Bjorn got 294 miles at 75 mph for the LR Raven, EPA range of 391 or 402 miles depending on when, so -25%, but this was at 59 degrees Fahrenheit which is why I think the Model 3 better illustrates the point. Certainly 9 degrees does not explain the 40% swing in EPA range vs. Bjorn test though. Yes, this is just one highway speed test but it should fully illustrate the point, and IMO, highway range is all that really matters anyway. I also think it's likely that Tesla underperforms EPA in some of these tests due to a larger buffer after hitting 0 displayed range and I'm not sure Bjorn's tests account for that, but that has been discussed in other areas and is not relevant to whether or not the Taycan outperforms the EPA range.
The two reasons I have most commonly seen which could explain the poor EPA range rating is that 1.) the Taycan has two gears which may be less optimal in testing than in real-world conditions and 2.) I don't believe they used the same EPA test methodology that Tesla does, because automakers are given a choice between two options IIRC. I'm as big a Tesla fan as anyone here, but stuff like this makes us all look bad.
Edit: I see
@hacer made a similar point but I will leave this as it offers a bit more detail.