Yes, they are, POGS. I didn't even write anything about the alleged characteristics of Remainers or Conservative-voting Remain voters (and it's obvious there are some.)
I was concentrating on the difficulties Labour faces in opting for Remain or Leave. I suggest you read what I wrote more carefully. However, I'll repeat the main points.
Every single post-referendum poll has shown that the majority of people who had voted Labour in the previous election also voted Remain. It's difficult to be accurate for all sorts of reasons, but the figure is about 70% (give or take for a margin of error). Ironically, about 70% of Labour-held parliamentary seats voted Leave. That's because places such as London and Manchester voted Labour AND Remain by a big margin. If Labour opts for Leave, it could possibly afford to lose some voters in those areas, because they're solidly Labour anyway.
The big problem for Labour is in its midlands and northern seats, which voted Leave. Some of these seats are marginals and UKIP (now Brexit Party) are eying them up. If Labour decides to support Remain, it would very probably lose some of them.
On the other hand, by continuing to dither, Labour could lose some of its Lab/LD marginals such as Leeds North West, Cambridge and possibly Manchester Withington.
Having lost most of Scotland, Labour has a real problem making its numbers add up and Brexit is adding to the complexity (and that's without Corbyn).
So, POGS, the majority of Labour voters who voted Remain are concentrated in a few areas. Their votes will produce very different results in a direct election, such as a referendum, from a FPTP system, such as a general election. What's your problem with that?