Yes, this subject has just been rolling round among aviation geeks, but now Boeing seem to be starting to soften up the investment community, etc, for this to happen.
To the general public, who the politicians represent, they will indeed not understand how some new safety requirement, known to be coming for years, can't be complied with for the 737-10 without an exception, for a type which is not just coming to the end of production, or already built, but hasn't even been made yet, will be built for many years to come, and then operated for years beyond that.
If the (few) carriers who have placed orders/options for the type are not careful they will start to get questions themselves from the general media about why they have ordered an aircraft not compliant with safety regulations, instead of one of a number which is.
It would be useful if someone could give a succinct technical explanation of what the matter entails.