Yea, Lizzie has a reputation as not being the most gracious of winners, and much less gracious than that when it comes to losing.
The actual overturned test doesn't actually seem all that bad; yes, it's foolish to have your phone on silent during the hour you're availed for testing, but hey, it's her first violation of the three so fool me once and all that. You can learn from mistakes, and therefore the other two tests are of greater importance. I think Benotti tying the locality of the tests to major wins is a bit bogus, not least because she was tested in competition the day after the missed test in Sweden, as World Cup leader after the Vårgårda round, and a week before the Plouay result mentioned.
However, the circumstances of it look worse when we add in the knowledge we have about missed tests from other high level UK athletes and the info about the number of athletes to have missed tests. Katie Compton commented on having missed 3 tests in a 13 year career and each time she was on one whereabouts violation she was terrified of committing another, and it seems surprising that Lizzie would not have been similarly vigilant especially given her relative profile and the impending Olympics. As has been suggested, one would have to be either desperate or very disorganized to continue to commit violations given the prospective punishment. She's given an explanation for the third, but the second remains a question mark. And when you add in the (now somewhat misleading) info about British Cycling helping pay for it all, and that with the Yates case fresh in the memory where once more it seemed like the intention was to sort it all out without anything ever becoming public (another thing that will raise the ire of some athletes of course), that's another factor to the storm.
The other thing is that, given how selective a calendar Lizzie has run in 2016 around her Olympic bid and how unbeatable she has seemed at times, I find it difficult to believe that she's that disorganized, because her peaking has been nigh on perfect throughout the season. She didn't race before Omloop (many didn't, so that's no surprise), won, then won Strade Bianche. She didn't do any of the Lotto Cycling Cup races in Belgium that most of her competition did, and DNFed Drenthe (though a teammate won), then won the Trofeo Binda and the Ronde van Vlaanderen (she sat up in the chase in Gent-Wevelgem though again, her teammate won). It's hard to look at that the same way now. The same goes for that stretch at the end of de Ronde, when the cameras caught Emma Johansson asking her how she was feeling in their two-up break; Emma's trying to mask shortness of breath to play games, Lizzie's barely even breathing. It's explicable; Lizzie's got a less obvious game-face than Emma anyhow and is maybe better at masking it, and also because Boels had the advantage of numbers in the moves to that point (Wiggle made a few tactical errors in the early season) Lizzie had done less work to that point. But now it looks different when I think back to it. I am always going to have to admit, however, that my own personal opinions of Armitstead will colour my judgement and may make me a harsher judge than necessary.
I mean, there's still the outside chance it could all be sanguine. She's not Christine Ohourugu, who at one point in her career had run her three best times in two Olympic finals and one World Championships final. Lizzie's been a great rider for several years, but there can be no doubt that she has absolutely kicked on in the last two years.