Actually on looking again, I think part of the problem is it’s so stark.
If it was some beautiful paving out there, and all the fences were covered in climbers, clematis or jasmine for example, and they had loads of varying size pots, from huge to small, with plants in, it would look a lot more welcoming. And many more people would be encouraged because not everyone wants a lawn. Particularly if you have teens or grown up kids who come back to visit.
If you had the funds, as it would be expensive, I’d rip put the decking and put a beautiful pale coloured stone patio in, maybe porcelain, leave a very small border and grow climbers all over the fences, And then fill it with pots with varying size plants and it could be fantastic. And look like a garden.
The fundamental issue is it is so hard and stark it is unwelcoming.