I guess what he meant was the decimation filter of some ADCs are rather shallow and soft, as shown on my previous post. Analog signal with frequencies higher than half of the recording sample rate (e.g. above 24kHz for 48kHz recording) may creep into the passband, as shown here, which is called aliasing. While "aliasing" is often used to describe DAC interpolation filters that go over fs/2, in more precise terms they should be called imaging for DAC, and aliasing for ADC.Is the difference really audible? What about using 48k, which will halve file sizes (for the same bit-depth)?
Using a higher recording sample rate means with the same ADC filter, the effect of aliasing will be reduced as this aliasing will further away from the band of interest. So after you digitized the vinyl and applied whatever restoration you may need, then you can safely downsample to 16/48 or 16/44 with a high quality software resampler. So there would be no wasted storage space.
But then, if you can't hear this aliasing in the first place, of course, it is up to you. I don't want to imply one can or cannot hear the difference, just want to describe what is going on.