Q.Why Do You Say Bamboo Is Invasive?
There are two types of bamboo, clumping and running. Please do not continue to spread the misinformation that bamboo is invasive. Clumping bamboo is not invasive.

Certified GKH Gardening Expert
With a search, you can find this article that will go into more detail about the two types.
https://www.gardeningknowhow.com/ornamental/foliage/bamboo/common-bamboo-varieties.htm
The article that you read happens to be for invasive bamboo. However, if someone doesn't know the difference, then many people will make the mistake of planting one that is highly invasive in their area. Many people see one thing, then will cease research for other information. For that reason, we have to warn people of the invasive nature of the most common bamboo.
Keep in mind that in some areas it is illegal to plant invasive bamboo, like Massachusetts, New York, Connecticut, and New Jersey, carrying heavy penalties and fines. Mistaking running as clumping may result in more trouble than one wants.