By squeezing juice out of an orange you’re separating the unhealthy stuff from the healthy stuff. Healthy stuff then gets thrown away.
Some juice every now and then won’t hurt anyone but it’s not healthy to drink it every day.
You’re separating liquids from solids. They each have their merits. The problem is industrial fruit produces a juice that is unlike anything in nature vis-à-vis sugar content.
Please explain how the two sugar waters are different.
I said industrialised fruit to refer to the orange. They’re much sweeter now than even in the 60s. There isn’t a practical difference between store-bought and fresh-squeezed juice (that I know of) other than, in some cases, preservatives, and the fact that with fresh-squeezed juice you have a tactile measure of the fruit going into the squeeze and so don’t tend to have e.g. a kid pouring themselves a tall glass of orange juice representing the juice of ten oranges.