I don't entirely agree. There are undeniably options for Brexit that are far less extreme than what either Labour or the Conservatives are suggesting. If we were to take a deal similar to the one Norway has, for example, it would certainly be a 'Soft' Brexit. The only reason people don't consider it an option is because most people recognise it's less appealing than simply remaining in the European Union, and yet it is still preferable to what Labour and the Conservatives offer.
The reality is that there are still no good options. As soon as that referendum was called, and certainly once it was won by Leave, we were going to go through Hell regardless of whether we end up leaving hard, soft, or not at all. We're either going to go through with something extremely stupid, or take up a compromise position that pleases no-one and is undeniably worse than where we started, or renege on something that was voted for by a small but clear majority.
If the Survation polling is correct then there may well be a political opening to move back from Brexit. Imagine if we start seeing polls every few days that show Remain is ahead by those kind of margins. If the 52% has become 46%. If the block for Hard Brexit really is under a third. Then what? We surely can't have the two major parties pushing for something the public doesn't actually want. Yet I see no reason to believe Labour are prepared to do that primarily because their leader has always been anti-EU. I can't help but feel a lot of people are going to be deeply shocked when they realise he's not pushing for Brexit just for show.