Admittedly, I'm a bit of a special case: I have a chronic condition since my teenage years, but it was only diagnosed recently. And the decision of the army did appear with the bill. But usually, most people don't try to get in the swiss army, but rather out. The military service is not exactly popular among the young generation, and a lot of people would prefer to do an alternative service (civilian service or civil protection) to avoid the military tax. A trend in politics is to make those alternatives as unattractive as possible (from an economic perspective, or the number of days you have to servce). The army seems to have difficulties to fill their ranks (or so they claim, at least). As far as my experience goes, there aren't picky on the medical part during the recruitment. Trying to cheat the medical experts with all kind of stuff (claiming to do drugs, to be suicidal, ...) is a common way to try to avoid the military service.

A reason I'm so bitter about it is the fact that, while my condition _did_ seriously affect me during the recruit school from a physical point of view (long walks and stuff like that, but it was still undiagnosed, and the military medics at the time simply judged that I was a "simulator"), using it as a pretext to have me pay the tax now, when my militaries duties are hardly more than office work, after I struggled so much to actually overcome my disease and complete the hard part, feels... unfair.

It's noteworthy that Switzerland was called out by the ECHR (European Court of Human Rights) on the matter, judging it discriminatory[0]. Following that, a system to allow people with disabilities to candidate for the army service has been introduced[1]. I'm currently trying to be reintegrated. However, they still reserve the rights to refuse anyone for any reason. So, I guess I will see if it's real, or just a mock to please the ECHR.

[0] https://www.escr-net.org/caselaw/2012/glor-v-switzerland [1] https://www.estv.admin.ch/estv/de/home/direkte-bundessteuer/...