Here's the thing: tomboys in both media and real life have differing qualities, and no two tomboys are the same. For example, some people in this and previous threads have suggested that tomboys are exclusively into traditionally male interests, but that is not the case. What makes a tomboy a tomboy is that they are PRIMARILY into male interests, but many tomboys have feminine aspects as well. Tomboys can enjoy dresses from time to time, can melt whenever they see a puppy or a baby, and can be just as cuddly in bed as any other woman, and in all honesty their occasional indulgences are good for both the tomboy and their partner.
The "real" tomboy in this image probably exists in the real world, sure. The "Le 4chan Tomboy" probably does too. But the point is, they're both tomboys, and there's no reason to try and shame one side of the spectrum just because the other side exists.