*He’s always been like that

Are you suggesting to delete?
https://books.google.com/ngrams/graph?content=always+was+like+this%2Calways+was+like+that&year_start=1800&year_end=2000&corpus=15&smoothing=3&direct_url=t1%3B%2Calways%20was%20like%20this%3B%2Cc0%3B.t1%3B%2Calways%20was%20like%20that%3B%2Cc0

I now, it's less frequent

The problem with the engram is that it doesn’t refer to a person. Your translation would be about a dead person, mine is about someone living.

Also, “like this” sounds like you’re about to describe what he was like. We use “like that” when it’s obvious to both parties from the context, etc., what he was like.

Also: https://books.google.com/ngrams/graph?content=always+was+like+this%2Calways+was+like+that%2C+was+always+like+that&year_start=1800&year_end=2000&corpus=15&smoothing=3&direct_url=t1%3B%2Calways%20was%20like%20this%3B%2Cc0%3B.t1%3B%2Calways%20was%20like%20that%3B%2Cc0%3B.t1%3B%2Cwas%20always%20like%20that%3B%2Cc0

OK, deleted, but I think "always was like that" is worth adding - I'm leaving this to you.