What I can understand from what you wrote is that every founder has to work on their networking.
I agree to that.
but this does not necessarily mean that they must be networked or their business has no chance. It only means that their business stands a better chance at surviving if they are deeply networked in the industry their tech will be used in and like your Garri example above illustrated, this is applicable to every business not just tech businesses.
Even if the business later finds out that it needs someone that is connected in the industry it is trying to break into, it can always hire someone just like hiring any other personnel. An example is how Tesla hired a manufacturing expert from Toyota.
I don't think Nigerians are any different from any other country when it comes to tech. Tech makes things easier and Nigerians like things easy. The only reservation I have about tech in this country is the adoption rate, it is hard to accurately estimate how well tech is adopted. That someone has smartphone at hand all the time doesn't mean they are actually using it.
back to the topic
What actually prompted the type of replies you got earlier in this thread is that your post implied that tech is unimportant in a business built around tech. That premise contradicts itself and can cause people to view your post as myopic and disingenuous.
Sure, sales and marketing are important but the effects of its absence aren't as spectacular as you are making it seem.
Have a nice life.