The conspiracy theorist in me says it's a way of signaling via the (bunk) neurolinguistic programming philosophy, which suggests that emphasizing certain words will evoke a desirable response. (Personal words like "you" and "your", as well as positive words like "give".)

The theologian in me says this person writes about/to god frequently and thus treats words like "you" as a capitalized proper noun so frequently that it's autocorrected.

The rationalist in me says English is not their first language and spends most of their time writing in their native language which may include different noun forms and so is habitual. And given some spacing and punctuation oddities, possibly an older person.

My money is on the rational explanation.

Hmm, in formal German "you"s can be capitalized. The "give" could just be noise.

Another potential explanation: sometimes when I dictate on iOS, the speech-to-text will spit out random capitalizations.