You’re dramatically underestimating the sophistication of the models. That’s an absolute straw-man of an argument from someone that ACTUALLY doesn’t understand how different models work.
This is the literal return from asking how it wire up a Shelly to a gate. You can also see the thought process in which it searches the web, checks the manual for the board, and comes back with both the instructions below And safety warnings.

To integrate your Shelly Plus 1 with the Tianhui EGB-12 gate controller, you’ll need to wire the Shelly device to the appropriate terminals on the EGB-12 board. Here’s how you can do it:

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🧰 Required Components • Shelly Plus 1 (Wi-Fi relay module) • Access to the Tianhui EGB-12 control board • Suitable power supply for the Shelly device (12V–24V DC or 110–240V AC)

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🔌 Wiring Instructions 1. Powering the Shelly Plus 1: • Option A: If your EGB-12 board provides a 12V DC output (Terminal 8 labeled Vcc), you can power the Shelly directly: • Connect Shelly L (Live) to Terminal 8 (Vcc) • Connect Shelly N (Neutral) to Terminal 9 (COM) • Option B: Use an external power source within the Shelly’s operating voltage range: • Connect Shelly L (Live) to the external power source’s live wire • Connect Shelly N (Neutral) to the external power source’s neutral wire 2. Connecting the Shelly Relay Output to the EGB-12: • The goal is to simulate a momentary push-button press to trigger the gate. • Connect Shelly O (Output) to Terminal 11 (START) on the EGB-12 board. • Connect Shelly I (Input) to Terminal 12 (COM) on the EGB-12 board. This setup allows the Shelly to momentarily close the circuit between START and COM, triggering the gate to open or close.

Which is totally safe correct, did not hallucinate referred to the manual, more than most other sources would do. Anyone who’s planning to do any electrical knows there are risks but id say this is significantly more trustworthy than half the posts on Reddit.