Beyond rehashing the "rules" once again you have no clue whatsoever what is actually going on in UK (or anywhere else for that matter outside of Ireland)
What part do you not understand there has been people in UK before hit by customs on goods that had marked low value and this was happening even before 2021 and has been happening for years
Just because it has not happened to you or some others you mention does not mean everyone in UK has not been hit by customs as there has been and lot more instances that you are aware about
There has been people in UK hit by customs in UK for low value marked
especially from items shipped from China
UK customers have been asked to provide copy of retailer transaction or PayPal invoice on imported parcels for parcels shipped retailers based outside UK happens lot more than you are aware about
You do understand there are millions of parcels that are imported into UK from overseas every year
If you actually think there has been no one in UK been hit by customs that has low marked value on imports then you don't have a clue as to what really been happening past vew years with UK border force and HMRC
You seam to have forgoton I previously lived in UK and I was dealing with Import and export of goods when I lived in UK for a good few years
I moved from UK to Ireland but still worked for same company and even in Ireland I looked after imports on some products for UK store
Where I work now still involves import and export of goods I deal daily with transport logistic trucks that deliver from UK and deliver to UK and other countries
It's a different job than what I previously did in UK/Ireland but still I see the customs paperwork involved sometimes when I have to check with a truck driver before he can enter a unit