For what its worth, I think the balance is beginning to shift and we're starting to hear more & more about the collateral damage. As with every debate in this country there'll be very vocal entrenched people on both sides, but I think the 'middle ground' is tilting.
I agree, and what's more I think it's inevitable. It's human nature to be sociable and to want the best for our (generic 'our') children, and the longer people are kept in isolation with increasingly frustrated and unhappy families the more they're going to start questioning - rightly or wrongly - why we're doing this. Even people who are still strongly in favour of lockdown because they know someone who's died, unless it's someone very close to them, are going to find those concerns outweighed by their personal day to day struggles as time goes on.
People are already finding ways to get around/interpret the restrictions so they can still see family and friends, and they have been since close to the start - imagine how many more people who've so far been sticking rigidly to the strictest interpretation of the guidance will start to think "one time won't hurt" after three more weeks of falling death rates, loneliness, cranky children, increased reporting on collateral deaths and no clear idea of when it will end. The government couldn't (can't) stop this if they wanted to - lockdown only works when there's willing compliance from most people, and as time goes on that willingness is going to become stretched ever thinner.
Dementing is like paving over a wasteland. At the start the ground might look smothered to the point where nothing else can survive, but give it long enough and the weeds win out, every time.