If you read it somewhere you can evidence it. I don't think it's anywhere near as high as that.I agree with the bold bit. In fact I'd go one step further and say that I don't think there is appetite among parliament for Brexit full stop.
But that isn't the issue here, we're talking about what question will/should go on a second referendum and whether that can be considered fair and democratic. The main problem is almost everyone has their red lines. Everybody talks about the need to make concessions but they all want the opposition to make those concessions. Remain voters want to remain. Leave voters want to leave on their terms. Based on what I have read, heard and people I have spoken to, there is probably less than 10% support for May's deal amongst leave voters. I've read somewhere that 70% of Brexiteers would now take a no deal. Although I've no way of confirming this I'm guessing, again based on what I've read and heard and seen on TV reports and programmes like Question Time, that the figure is not that far away from the truth.
You've already admitted above that you don't see no deal as an option on any peoples confirmatory vote or second referendum. The likelihood based on everything I've seen so far is that it would be a straightforward choice between Remain, and whatever deal is on the table whether it be Mays deal or customs union or whatever. Neither option would carry the support o the vast majority of leave voters.
I know you said that you haven't been side stepping the question, but the fact remains that you still haven't answered it. So I'll ask you again for what must be the fourth or fifth time. Do you believe that a second referendum that alienates and disengages possibly more than 90% of the leave supporting electorate is fair and democratic?