Those sentence are also perfectly understandable, once you’ve understood the order of the words, but they’re written in such away that you have to think about it.

No, they aren't. Read the way they're written, as in left to right, none of those sentances make sense. They do not make sense because they disobey the rules of grammar.

But the math equation 2+5(8-5)=17 makes perfect sense. Writing it like (8+5)5+2 =17 also makes perfect sense, but writing it this way does not somehow enable it to make "more" sense than the first way. It does not, because both of those equations are the exact same thing. It's called "the law of equivalence," i.e. 2+5=5+2. It's just two ways of writing the exact same thing. You cannot do this with grammar. "The Horse eats the grass" =/= "The grass eats the Horse." You cannot just rearrange the words in a sentance and get the same meaning the same way you can rearrange the elements in an equation.

It's not "less effort" to read it one way or the other, because both of those equations are exactly the same. It only makes "more" sense to YOU, yourself, personally. But to everyone else who learned the order of operations it makes no difference which way it's written.

It’s obviously not just myself as posting out of order math problems are a constant source of online engagement.

Like I said in the begining, people are fucking stupid.

posting out of order math problems

There's no such thing, only people who remember the rules of Maths and people who don't