It is meaningless because it doesn't describe anything. You keep repeating that deists believe in God. But "God" doesn't hold any meaning at all if you don't attribute meaning to it yourself. And that's where theism comes in. At least their God can be described, the deistic God is nothing but a half-baked unprovable and unfalsifiable concept that is by its very definition unknowable, thus meaningless.
If science does discover what precipited the birth of our universe, if such a thing is even possible, we will never call that process God. It will be what it is. God is an inherently meaningless concept - that's what humans did to it by making it describe imaginary realms of existence or simply something that is just not part of our world. But that is a ridiculous concept. Everything is part of our world, as far as we're concerned. These thoughts and ideas themselves are part of our world. They could never describe anything "outside" of it. We can talk of an "outside"(aka God), but that's a mere trickery of language. What theism did with this meaningless concept is add real meaning to it and then disguise it as something else. What deism did with it is strip it of that meaning altogether. And what remains is a belief devoid of any content. That voidness is what makes it neutral, granted, as far as belief derived actions and intentions go, but it's also what makes it an empty idea that doesn't even try to describe anything real.
If science does discover what precipited the birth of our universe, if such a thing is even possible, we will never call that process God. It will be what it is. God is an inherently meaningless concept - that's what humans did to it by making it describe imaginary realms of existence or simply something that is just not part of our world. But that is a ridiculous concept. Everything is part of our world, as far as we're concerned. These thoughts and ideas themselves are part of our world. They could never describe anything "outside" of it. We can talk of an "outside"(aka God), but that's a mere trickery of language. What theism did with this meaningless concept is add real meaning to it and then disguise it as something else. What deism did with it is strip it of that meaning altogether. And what remains is a belief devoid of any content. That voidness is what makes it neutral, granted, as far as belief derived actions and intentions go, but it's also what makes it an empty idea that doesn't even try to describe anything real.
