Why Maximum Brexit isn't going to happen

Maximum Brexit has been considered as a way for Britain to leave the EU since 2016. In the UK, voters for the UKIP (United Kingdom Independence Party) has grown over elections, but because the direct winner-gets-the-post type of voting (the type where the candidate with the most votes gets the presidency) is used in Britain, the pro-Maximum Brexit UKIP party has been switching posts every few elections with the Brexit-stalling Conservative Party, there hasn't been any groundbreaking progress. This is the first reason why Maximum Brexit is not going to happen in the near future.
Secondly, if you look at voting results you may think that Brexit was more popular, as it was 52% For and 48% Against, but if you look at a map of the results most of that 42% was in Scotland and London, and the 52% was England. When the referendum was called in 2016, Scotland immediately warned that if Brexit was to occur, they won't be coming.
Another reason is because Maximum Brexit means that Britain will be a foreign, independent nation, Britain will have to enforce border security and defenses on the border with Ireland. Even though Britain has erected a wall on the North Ireland-Ireland border before, it caused violence so severe to a degree that the UK and Ireland have made a deal to never build a wall. Maximum Brexit will mean they have to build a wall, and that will mean a lot of violence. If UKIP or the Conservatives do not want to build a wall, they cannot achieve any type of Brexit unless they let North Ireland leave the Union. But if North Ireland leaves the Union and reunites with pro-EU Ireland, it could promptly lead the Scotland leaving the Kingdom for the EU too, which would mean the dissolution of the Union, which will serious damage to the English Economy, as it will be England and Wales playing on their own. Britain relies heavily on exports and imports, and due to the banks in the UK relying on EU support to stay active, and the fact that a lot of countries do not want to trade with the UK when they leave the EU, a large portion of British businesses will be affected and may go bankrupt. If the UK doesn't let North Ireland leave the Union but doesn't build border security, there is practically no Brexit as people can enter Britain through Ireland, and unless we go back to the Hong-Kong style controversy, there is no point in doing so.
Finally, there is a very awkward situation in negotiating for what comes after Brexit. The EU refuses to negotiate unless the UK leaves the EU (as it gives more sway to the EU), but the UK refuses to execute Brexit unless they've set terms with the EU (as it gives more sway to the UK).

This is why Brexit, for the most part, isn't going to happen.