Anything is possible and as you say it`s all speculation unless a scientific experiment was done which probably has been but good luck finding it.
Honestly the only towels I really care about are my paint towels the others not so much. The ones I wash in hot water are multi purpose towels and the change that may or may not happen are of no consequence. My good towels are never exposed to anything that would need that kind of temp to clean or soaked in APC. I`m pretty anal about my paint towels, they cost way to much to not take care of them and to use them for their intended purpose only.
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