//If the right to settle has been granted, does that not mean the person must have met whatever conditions were set in order for it to be granted in the first place?//
Alas yes it does, Corby,
But there are three issues that need to be addressed:
The first is that it is quite clear that this country is incapable of assessing asylum claims in a timely manner. This is partly because no country can be expected to properly examine such claims when the numbers are so vast. But even with lower numbers, the torpor with which those responsible for such things seem to be afflicted, coupled with the seemingly endless routes to appeal, mean that once here, an illegal migrant in vanishingly unlikely to be removed. This means that huge numbers of illegal arrivals are being granted "de facto" right to remain: they have not officially been granted that right but are not being denied it either, so they remain here.
Secondly, nobody who arrives from a safe country should have any claim whatsoever considered. Since virtually no arrivals into the UK come from a place where their safety is jeopardised, that rules virtually all of them out from day one. The UN's interpretation of Article 31 of its own Convention makes this quite clear, though in recent years they have sought to place a different interpretation on it to that which was originally intended (and to which the signatories agreed). But instead of placing the Article up for reconsideration, they insist their latest interpretation is the official one, even though it runs contrary to the plain language in which it is written.
Lastly, the reasons given by many of those claiming asylum are very questionable but rarely seem to be questioned. A thorough examination of the acceptable reasons for claiming asylum - and the evidence required to support those claims - needs to be undertaken because it is blindingly obvious that large numbers of those given the right to remain were under no threat in their country of origin, but simply fancied "a better life."