I am not knowledgeable enough to have a well informed opinion. Some thoughts to consider:

Stefan is right that, from the medical perspective, there is no need for these pixel types. And urgently needed not they are. We can easily convert all the files with strange pixel types to files with 'normal' ones. The issue here is simply from a usability/user experience perspective. It is uncommon to me (and probably other as well) to load an image and then get told the pixel type is not supported

I sent the file to you via slack.
Not supporting some pixel types can be very frustrating for users, so it might make sense to extend this list (I would certainly appreciate it and a 200MB standalone is really not large by 2022 standards so there is some headroom imo ;-) ). This is not the first time I ran into this issue :-/