Er no. There is a long history of cyclists abusing TUEs to gain access to PEDs/Masking substances. It is perfectly legitimate to question:
i) Whether the reasons given by the riders for their TUEs are legitimate - this goes for Dertie, it goes for Uniballer, it goes for Landis, it goes for Hamilton, it goes for Rosendo. Is there any proof that Rosendo is lying about his piles? Should we not have questioned Hamilton's vanishing twin story?
Why should we believe Dertie but not Rosendo? Why should we believe Dertie but not the Uniballer?
ii) What the benefits/disadvantages of each med is? We know from the Fuentes case that riders take a cocktail of drugs - many of which on the face of it would seem to have few performance enhancing benefits. So why shouldn't we discuss the topic?
I would ask the same question of any rider who was claiming things - if it were Cuddles, Menchov, Wiggins, Sastre. For someone a rider to be as dominant as Dertie is, despite having as many health problems as he has, is very impressive, but equally, given his team history (LSW, Disco, Astana) and his links to OP, the Epilepsy drugs in the Astana bin story, it is perfectly reasonable to query any potential doping connection.
If you think that the stories are genuine then fine, if you know that there are no benefits to taking epilepsy medicine, pollen allergy medication then fine. If you think that it is all above board then fine, but by that same extent you have no more proof that everything is above board (other than what Dertie and his PR people claim), than I have of everything being underhand.