What does "person dumb" mean in following sentence? [closed]

It was odd that Apple even offered him a job. During his eight years at Adobe, most recently as chief technology officer, he was best known as the only person dumb enough to publicly fight Steve Jobs over the iPhone’s lack of support for Flash videos.

Wired Magazine, iPhone Killer: The Secret History of the Apple Watch; undated

How do I interpret person dumb in this quote?

...dumb enough to...

is a derogatory descriptive term of the subject of the sentence and means

stupid enough to...

or

foolhardy enough to...

so in this case, it means

he was best known as the only person who was stupid enough to argue with Steve Jobs

You are parsing the phrase a bit wrong. "Dumb" here belongs to "dumb enough to". You can rephrase the chunk to:

... the only person who was dumb enough to...