Except if you want features like being able to render from RAW or store the files in a database, then it is highly relevant, and you have no choice but to accept it will inevitably be slower. Even if Adobe do things like leverage the GPU to speed up the preview rendering, it will always be slower. Such is life.
The basic import itself is slow see times in bold below. Nothing to do with rendering of anything.
I recall testing Bridge's ability to copy/move files years back to using the OS instead. Bridge like LR was glacial in comparison. Not sure what Adobe do to files when moving stuff.
Apple Photos was by far the fastest: the full import took just
9 seconds.
Photo Mechanic wasn’t far behind, clocking in at
12 seconds.
Capture One was slower, taking
27 seconds to bring in the photos and 114 seconds to build full previews.
Finally, Lightroom took
190 seconds just to bring in the photos, and a whopping 685 seconds to build full previews.