Even if you're right (which I personally doubt) - that would more be a commentary on how people can be convinced to assume risk without any upside rather than a rationale of why it's a good idea to voluntarily talk to the police.
I'd argue it's more a commentary on how the lawyer making the video is pretending to be less moral than the median human being and is probably not as lacking in human decency as he is pretending to be for performative career reasons.
Though your framing in terms of pure selfishness (risk and upside to the person talking to the police without consideration for anyone else) is probably irrational unless you are also opposed to altruism.
If you generally despise altruism and are not wired for emotions like "guilt" I believe you may in fact not talk to the police in that scenario.
> is probably irrational unless you are also opposed to altruism.
No, it just means that I value my personal well-being over those of others. Maybe to an extent you dislike, but that's also part of my point - the expectation that other people should place themselves at risk for your well-being could also be interpreted as a selfish or self-entitled attitude.