about "bad english"

I came to think about this text written in this book I bought last year, by the artist group Delaware, check out their site its super sweet!

"Official World Language.

Delaware receive emails asking abou+ our music and design from many coun+ries such as France, Germany, Brazil and Ghana.
99% of those emails are wri++en in English.
No+ only +he ones from English or Americans, bu+ also +he ones from non-na+ive English speakers.
Delaware, being Japanese, also reply +o +hem in English even if i+ is +o +hailand or Russia.

Hmm...+he official world language is English, +hen.

No, bu+ lis+en, jus+ a momen+ please!
Because English na+ive-speakers' vocabularies are +oo big and +hey use slang +oo, i+ is qui+e hard to unders+and +hem as we are non-na+ive-speakers.
On +he o+her hand, non-na+ive-speakers' English is very easy +o unders+and.
I+ can be unskilled, bu+ +hat's why +hey are s+raigh+forward.
We feel good abou+ +heir a++i+ude +o communica+e wi+h us wi+h +heir bes+.

We +hink +he official world language is no+ +he English of na+ive-speakers, i+'s +he Simple-English of non-na+ive-speakers, isn'+ i+!?

We are no fool * you are no silly
We are so beau+iful * you are very wonderful
Are we no fool? * are you no silly?
Here we go!

+hat's why +he words in Delaware's music are wri++en in Simple-English.
Surely!?
Really!?
Le+'s enjoy fu+ure en+er+ainmen+ now!"