“(like the Yishuv)”
Until recently, the Yishuv was the only one besides Maarava. I think there may be some others now.
“watched movies.”
I once went out with a boy who was completely Israeli and whose parents were not from an English-speaking country. He spoke such fluent english that people thought he was American. He had learned it from watching tv as a kid (he was unusually smart, ba”h).
However, he was bt, and not Chareidi. Watching movies is generally not considered acceptable in the Israeli Chareidi world, certainly a lot less than taking english lessons. And the term “otd” was not meant literally in this case – it just meant “doing something unacceptable”, so watching movies would probably fall in that category in this context.
btw, I would imagine that even most boys who did one of the above would not be able to write english so well if they were born in Israel. I don’t think my sister can do that even though she wasn’t even born here, isn’t Chareidi, had an academic education, and grew up in a house that looks like a University library.