// This athlete clearly has a genuine problem but if there’s a ruling on acceptable testosterone levels none should be exempt. //
This would have been an understandable position if the rule had already existed, but in fact several new rules were introduced in response to* Semenya's case -- that is, after she'd started to compete.
Rules on Testosterone levels were first introduced in 2011, then withdrawn in 2015, then reintroduced and tightened -- and, curiously, targeted at only a handful of events, including specifically the ones that Semenya competes in. You can't say that it's fair to hold her in breach of rules that didn't exist when she started to compete and seem to have been designed specifically to exclude her.