Yet again, this information shows that TUEs are a red herring.
If you think the WADA rules should be changed to eliminate TUEs or restrict TUEs more, that's a fair argument. If you think the WADA rules should be changed to require a TUE for thyroid medication or to ban thyroid medication, that's also a fair argument. But someone who gets a TUE under the current rules or takes thyroid medication is not cheating under the actual WADA rules as they now exist. It's simply not a violation of any existing rule.
In the case of Salazar, if you believe the allegations, Salazar or his athletes may have violated Oregon or US laws by using someone else's prescription for thyroid medicine. But that would be a violation of law, not of any WADA rule. Using the thyroid is entirely permissible under WADA's rules.
Anyone who is seriously trying to dope in the current environment is probably micro-dosing something like testosterone, steroids, EPO or taking something that is not currently detectable. Those are all things that actually violate existing WADA rules, vs. getting a TUE or taking thyroid supplementation. That's why the most serious allegations against Salazar have always been the chart allegedly showing that Rupp was on testosterone and Salazar's Androgel experiment. If you disbelieve Salazar's explanations (the $64,000 question), then both of these could be taken as evidence of microdosing testosterone. Hopefully, USADA will finish its investigation on this someday.
But the whole TUE "issue" is just a distraction. Very simply, if you have a TUE, you are not cheating under WADA's rules. Disclosing TUEs really only shows that someone is complying with WADA rules, at least with respect to what they report on the TUE.