I have a different viewpoint than you (are you surprised?) in that principles are a statement of intention and goal, whereas policy is the means by which that goal will be sought.
You know what? Since it's holiday season and I'm feeling ◊◊◊◊◊◊◊ jolly, let's analyze this then, shall we? We're two pretty bright people.
I don't have much to argue with when it comes to this statement here, but I think by the end we'll both agree that this was a throwaway sentence. A feel good phrase that doesn't really play into the whole "thE lEFt WAntZ oPeN BORdERz" nonsense.
To your point, lets see what the Green Party says:
In an ideal world, most border controls would not exist...
Just as I, and others have said, they aren't speaking literally. They're saying "in an ideal world".
...In the Green Party we are not normally shy of making policies for our ideal world. However to unilaterally remove our border controls seems a step too far and is a tough sell on the doorsteps.
This plays into what you were saying with your comments on the GOP and the ACA. Here comes the key though, since they know it isn't an "ideal world"...
Instead here we propose a system of managed migration, with visas and rules.
So they've already said they have a plan in place (we can't say the same thing about the GOP and the ACA. They have ◊◊◊◊ all and have said as much). This doesn't really appear to be working towards open borders though, does it? Seems to be a structured immigration process.
This will enable us to welcome migrants to the UK and treat them with dignity, and to also not dismantle the system of control in case we need to restrict movement in the future for whatever reason.
Again, doesn't really seem like they're working towards an open border since they're acknowledging the need for controls and the desire to restrict movement. Seems pretty...controlled.
This approach seems to be preferred by the general public, a report by the Institute of Public Policy Research in November 2022.
Look at that? It also seems they're listening to the people. They even are going to *gasp* exclude people:
MG310. Visa applications from specific individuals may be rejected on grounds of public safety. These grounds are restricted to serious crime and threats to national security.
Given the context of their entire policy, and what they have stated as far as how to move forward it seems pretty clear that they aren't trying to do away with borders. It was merely a throw away sentence saying "In a perfect world we wouldn't need guns", right? That would be a perfect world, but since we aren't in a perfect world things have to be managed, controlled, monitored, but still respectful to those who are subject to them.
I see the statement for what it is...a feel good statement.