Finally, I think I'll try to design a plugin so that the left mouse click doesn't act as an action key and will only be used for movement.
Although I still think that moving around using the keyboard is more reliable, some colleagues have suggested that I keep the mouse mainly for accessibility reasons, as perhaps not everyone can use just the keyboard...
Thank you also for your funny comment about the mega bomb, I found it very amusing.
In fact, to avoid accidental activation, the safest thing would be to deactivate both the keyboard and the mouse as well. 😁