Your argument makes interesting observations, but relies on Earth-centric assumptions. For instance, the requirement for land-based development of complex chemistry and metallurgy assumes there couldn't be alternative pathways in different environments. We already see complex chemistry happening in deep-sea hydrothermal vents that challenges our assumptions about where complex processes can occur.

Similarly, the needs for human-like vision or specific tool manipulation may be limiting our analysis. Consider how bats and dolphins build sophisticated mental models of their world through echolocation, or how octopodes demonstrate problem-solving abilities with fundamentally different appendages than ours.

Given we only have one example of technological civilization, we should be cautious about declaring which features are truly universal requirements versus those that just happened to work for us. There might be paths to advanced technology that we haven't yet conceived.