The question isn't whether you can or can't, the question is whether your "real" product has a "real" controller board, for values of "real" that conform to the opinion of someone known as "rhinoceraptor" on Hacker News.

A competitor who doesn't worry about such details will have an advantage in many markets.

At one time, the denizens of a site called "Hacker News" might have been expected to grasp this idea intuitively.

You seem to have misunderstood rhinoceraptor's point given the context they've responded to.

The post they responded to said that the Raspberry Pi is unsuitable to all "real products" because they can't buy 250k of them - you might actually be arguing against their definition of "real product"? rhinoceraptor merely pointed out that that isn't the goal of the Raspberry Pi, and one thus should use something else if it doesn't fit the requirements. If that's your situation, your competitors will have the same problem. If it isn't, then "use something else" doesn't apply to you.