The author argues Petrobras is undervalued at a P/E of 4.8 with a 7% dividend yield, so investors get paid to wait through market turbulence. The stated catalyst is Chinese buying of the company's output supporting the business. The main risk is the author's own caveat that they are 'literally just saying numbers' and may not know the fundamentals well.
The author claims Trump has signaled the Strait of Hormuz situation will remain ongoing until at least November, keeping geopolitical supply risk elevated. That persistent risk premium should support crude oil prices, so the author advocates being maximally long oil. The stated catalyst is the continuation of the Hormuz standoff through November; the main risk is a de-escalation that removes the supply premium.