So true! I am tired of our being expected to be perfect in our submissions and yet the powers that be are not!
All the rules that were in place to protect these, were openly abused and discussed how to do this on the internet forums.
Some of the old rules made it easier for the dishonest people than for the honest!
eg. arrive at the border with your British spouse, say you were just visiting, but then refuse to go home. After about a year, they got legal stay and immediate full access to UK benefits in their own name and bill free NHS: known as Discretionary Leave - 2 three year visas to ILR. It was a well known abuse on the forums. Those who followed the rules and came on a spouse visa, had to wait until ILR to have UK benefits in their own name.
In about 2012, the UK ended DL. Now these must have British children in the UK to be allowed to stay in the UK, outside of the imnigration rules, and even then it is not a given. And it is now 10 years to ILR instead for these: 4 visas to qualify for and pay for, 4 lots of IHS to pay for, and now no UK benefits in their name until ILR.
Those that then tried to abuse these rules and did get the new 10 year route to ILR as they had British children, often left the UK when they saw that DL had gone and returned on a spouse visa instead: much cheaper and only 5 years to ILR instead of 10. The rest found they had to go home as that no longer worked and they had to apply for a spouse visa, as they should have done before they came to the UK.
Then the no in-county appeals came in, under the Immgiration Act 2014 (for points based visas) and 2016 (for everything), to stop that abuse. Once refused, these then go back to their own country to appeal their refusal. This defeats the object they wanted, to try to stay in the UK for years on various appeals during all their refusals, for all different applications they put in. These often return on the spouse visa instead.
At the suggestion of the Chief Immigration Officer, the UK made immigration crime part of the Good Character requirement for citizenship,and that applied for all
decisions taken from 11 December 2014. For those that got the old DL after they lied to UKVI to enter the UK/a period of being an overstayer, this means they are not of good character and they get refused BC for 10 years: for these, their 10 year clock starting from when they got their first DL, as long as they don't do something else that is not of good character. Whereas those who respected the laws back then when DL was around, and correctly entered the UK on a spouse visa, had their British citizenship in 3 years.