Well I started another issue a little earlier and it didn’t take more then 20 minutes and I got a response from Wendy. She may not be a developer but I have seen her on many videos on the NNELS Canada YouTube channel so she seems to be very active with regards to accessibility and standardization. She is always introduced as being part of the KOBO team.
She seemed to be very committed to counter my arguments so she cannot be that far out of the loop. You can have a look at her reply at
https://github.com/kobolabs/epub-spec/issues/68
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