Thank you for reporting these. I must have unknowingly repeated and paraphrased text that I had previously read and remembered. It was not intentional. I am making explicitly marked corrections, with appropriate citation of sources, and links to the earliest available archived versions of my edited posts. I will not remove any posts, or try to hide anything.
Not that I have a cat in this fight, but at least a few of those examples don't seem to fit the bill for paraphrasing. Its a little iffy but somewhat reasonable if an uncommon phrase sticks in your head, but it'd appear to me that the likelihood of of it being a simple memorable phrase decrease when your sentence structure is the same and there are sort of uncommon bits of stylization
can a Quantum search for SHA128 faster than a classical computer search through SHA256?
where you'd expect it to say
can a Quantum search for SHA128 faster than a classical computer can search through SHA256?
or
can a Quantum search for SHA128 faster than a classical computer searches through SHA256?
example 4 is full of the signs of plagiarism that sort of sticks out in people's coursework. Stuff like putting the ö in Schrödinger’s is fairly uncommon unless you are copy and pasting, as not many people know how to type a ö. Consistencies in stylistic/ideological capitalization, like Spirit, and other little things like (the Holy Spirit). Though at least you didn't plagiarize the colon

I wouldn't call any of that conclusive evidence for failing someone, but you look for other patterns from there.