All in all, 3D printing allows a lot more flexibility in designs, but if you attempt to 3D-print many items of your daily life exactly as they are, the result will often be much worse than with the production process that the object was designed for, or sometimes it is possible to come near to the original object, but producing it using 3D printing takes a lot more effort.

It is rather a consensus in the 3D printing community that people should rather make use of the opportunity to use the insanely increased flexibility that 3D printing allows to reimagine how objects in daily life look like - and thus create better versions of such objects that are (by construction) also good 3D-printable.

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Addendum: Concerning "the transparent insert thing": as far as I am aware with resin printing, you can 3D-print transparent things very precisely, and even with FDM printing, a lot of progress has been made with respect to printing objects that are quite transparent:

> https://blog.prusa3d.com/3d-printed-lens-and-other-transpare...

Another example is this one where the 3D print was done as a continuous printing (i.e. no slicer, or sorta like a vase mode print) to make the clear show a bit better: https://m.youtube.com/watch?v=2Sy50BrlDMo