The glasses are what trouble me.
The mountains of hair have a simple explanation - prevent typhus. Obviously the National Socialists cared about prisoner healthcare, as Mattogno goes into detail at length in "Healthcare at Auschwitz",
so why would they dispose of all the eyeglasses?
Many people, including myself, need them in everyday life - wouldn't this hinder the working ability of the prisoners who needed their eyeglasses to see properly?
It doesn't add up.
Human hair shaved from the inmates' heads was, as you rightly suggest, a sensible hygiene measure designed to assist with trying to control the many typhus epidemics in the labour camps.
Just like the advanced German technology, microwave delousing machine developed by Siemens-Schuckert.
High Frequency Delousing Facilities at Auschwitz
In the Bletchley Park decrypts links posted above, we read that this human hair was used industrially. So nothing "secret" or nefarious about that whatsoever.
There was a war on. Germany was blockaded. Everything was in short supply and therefore held higher value than normal. Britain for example, was so short of iron and steel that metal street railings were ripped out & folk were handing in unwanted metal cookware for recycling as part of the war effort. Germany was no different.
What is it that "bothers you" about piles of glasses at, for example, Auschwitz ?
Pick any town with a population comparable to the population size of Auschwitz.
Count how many folk die in that town in 55 months, the period that Auschwitz was operational.
Count how many of those deceased towns-folk wore glasses ?
Now throw in persistent typhus epidemics, the poor state of health of the peasantry interned, many already infested with typhus, the poor sanitary, hygiene and food situation which was ordered to be reversed and was subsequently improved with some success, the disciplinary executions, the toll of work etc. etc.
People died in Auschwitz and elsewhere, just like they do everyday, everywhere.
Some of them wore spectacles.
What is the problem you are having seeing that ?
Maybe you need to ask yourself why the the "piles of shoes" images are used ?
When we know that the inmates' shoes were replaced by wooden clogs.
Why doesn't that "bother you" ?
Then ask yourself, how many folk have "died" in Palestine since the Nakba ?
How many of those wore glasses ?
Why do we not see piles of Afghan / Palestinian / Iraqi / Syrian spectacles and shoes ?
Or piles of spectacles and shoes from the millions who died in both World Wars ?