It's a classic infographic which has been floating around the internet for a long time. Hopefully you're not trolling and did learn something - because more people need to understand the concept.

Because otherwise you end up with districts like this one in Texas which purposely segments the community to alter the votes in one's favor:

Texas 2nd district

Fun fact about Gerrymandering, it was named after former Massachusetts governor and founding father Elbridge Gerry - https://en.wikipedia.org/wiki/Gerrymandering

I agree. However, I think most republicans completely understand the implications of political gerrymandering, and embrace it with enthusiastically open arms.

You're not wrong but in the example the "good" one at least respects the majority. That's the point of the illustration, that a minority can be a majority with bad gerrymandering, and I think the image illustrates that just fine.