The AliExpress ones can actually be good in one sense precisely because they do have fixed addresses; they can be cut into segments and then wired in parallel which simplifies some installations, but if you want to use more than 200 or so then you’ll need an output expander to give you a separate channel and address space for the additional strings.
If I remember correctly, @wizard’s 8x8x8 volumetric cube used one 8-way expander per row (so 8 in total), but with the AliExpress strings you could do the same cube with 3 channels of a single output expander.