In C, we don't know whether "I" will get incremented or decremented first.

Yes, you've already said that. And you said it was the same for Perl. I replied that in Perl, you do know.

The fact that we are "arguing" about some syntax

Since when were we talking about syntax? Our posts are entirely about operand evaluation order.

I am not gonna argue precedence.

Since when were we talking about operator precedence? Our posts are entirely about operand evaluation order.

Think about what will happen say 2 years from now?

Nothing. Operand evaluation order has been unchanged for at least a decade, probably since day one, and its the intention of developers not to change it. They couldn't even if they wanted because it would break existing in subtle ways.

My opinion is that clear code is good code.

Of course. And I gave two examples of clear code that relies on operand evaluation order.