A job advert is a marketing document written by someone who is not doing the job, usually assembled from the last advert for a similar role. Read literally, most of them describe the same position. Read carefully, they leak a lot: what the team is missing, which responsibilities were bolted on late, whether anyone has thought about what this person will do in month two.
The third section is where the value is, and it is deliberately framed as questions rather than verdicts. "Fast-paced environment" genuinely does sometimes mean a fast-paced environment. What it reliably means is that there is a question worth asking on the call, and going into a first conversation with three specific questions drawn from the advert's own wording is both more informative and a much better impression than asking about company culture.
Section four is the other half. What an advert leaves out — the salary, the reporting line, the size of the team you would be joining — is chosen, and noticing the absence is easier when something points at it.