“Because of these modern math rules, the official correct answer today is 16.”

The real mathematical lesson

Professional mathematicians generally avoid writing expressions like

$\div 2(2+2)$

because the notation is ambiguous. Instead, they would write either

$\div 2)(2+2)$ , which clearly equals 16, or
$\div [2(2+2)]$ , which clearly equals 1.

Verdict

The article is correct that:

These viral puzzles are designed to generate arguments.
The notation is intentionally ambiguous.
Clear use of parentheses eliminates the confusion.

However, it is not correct to state that 16 is the one official correct answer today. The mathematically correct conclusion is that the expression is ambiguous as written, and its value depends on the convention used to interpret the notation. In formal mathematics, the preferred solution is simply to rewrite the expression so there is only one possible interpretation.