They don't possess the necessary equipment to need Mo 99 or Tc 99. Therefore, that isn't a valid reason to be highly enriching uranium for them. Further, they aren't selling that highly enriched uranium on the world market to anyone else that might actually need Mo 99 / Tc 99
Your claim is poorly worded and incorrect. The claim is that 60% enriched uranium has no civilian use in Iran. Further, 60% enriched uranium can easily be further enriched into highly weaponizable uranium. Therefore, the argument is that Iran is enriching uranium for use in nuclear weapons since they internally as a nation have no other use for it.
Therefore, you might want to more closely examine the argument being made and apply reason to it rather than subtly changing that argument to fit a preconceived set of outcomes you favor.
No, it is your burden of proof that must be higher. Explain by showing that Iran is using, currently, highly enriched uranium for some non-weapon purpose. That is, demonstrate they have a use for it and are actually using it for that purpose. That means saying that there is a medical application for it without showing that they have the necessary medical devices and trained personnel IN USE you have no argument in that particular application.
I already showed, including a world map, that Iran does not posses any SPECT scanners, the most common use in medicine for Mo 99 / Tc 99.