@Pavementworrier "Non EU now need to queue up at a machine to get eyes scanned and finger prints and answer various questions before moving on to passport control. Trouble is the machines seem to keep breaking down causing absolute chaos. (I'm not sure if there's variation by country)"
Have you experienced this yourself or are you just repeating the anti-EU rage bait stories from the Daily Mail, GB News etc.? What are you actually getting stressed about?
And yes, various countries are introducing the EES system in phases and at present, not everyone is being scanned. When it has been getting very busy, at some borders only around 10% of travellers are being processed this way. At Dover, car passengers are not at present being processed.
As for ETIAS, which will be introduced by the end of 2026, this is applied for online long before you travel and so should have no impact on the experience at the border, as you won't even be able to board the plane or ship without a ETIAS visa-waiver.
@Coffeeishot "Actually i had to take my glasses off at Palma Airport because i wasn't recognised but that was my error not the machine."
Removing glasses is pretty standard at these machines - even at Stansted, Heathrow and other UK airports.