If SLMs have clear advantages, why do most agents still rely so heavily on LLMs? We hypothesize that the barriers are perception-based or caused by organizational culture rather than technical limitations. Shifting to SLM-enabled architectures requires an intentional mindset change. SLM research uses generalist benchmarks, even though agentic workloads demand different evaluation metrics. Plus, LLMs often dominate the headlines. As the cost savings and reliability of SLM-enabled systems become undeniable, momentum will shift. The transition could mirror past shifts in computing, such as the mo