Amidst the growing importance of sustainability, it is crucial to acknowledge the heightened relevance of incorporating sustainable practices into investment portfolios. Institutional investors are rightfully placing significant emphasis on this aspect. Nevertheless, when it comes to implementing and managing sustainability objectives in passive equity portfolios, careful decision-making becomes imperative. It is essential to exercise caution and avoid falling into the trap of climate tunnel vision by solely relying on seemingly straightforward solutions like the Paris Aligned Benchmark.