There is no real irony if the choices are considered,
because as it stands, either those bottles, wood chips and clothing are going to go to waste, along with all the materials and energy used to produce them,
or they are going to be reused and repurposed.
The choice is obvious!
As an analogy, it's like having a wasteful roommate that buys pounds and pounds of produce and doesn't eat them, and you use all that waste to make compost.
Should you feel guilty for making compost? No! Better not gone to waste.
There are still years ahead of us for our society to become sane,
but in the meantime we need to use transitional strategies, such as thrift stores, to mitigate the damage we do to ourselves.
Eventually, everything will be biodegradable and hemp while all nondegradable materials will be recycled 100%.
But as we grow to that point, the more damage mitigation the better. And if that means benefitting from the scraps of mindless consumerists, then so be it. No irony in this inevitable transition!