I read that washing machines had a big impact, manual washing of clothes could take a full day of work.

Not true. 2∞ is not bigger or smaller than ∞. This is explained by Hilbert’s hotel. And subtracting infinity from infinity is undefined so you do not get 0 = ∞.

Yes, indeed

I have a collection of flacs but convert them for my phone to something lossless

Deletion of personal data without consent or lawful base is also a violation of the GDPR.