"Below" is used as a stranded preposition in your case (the more generally accepted usage), whereas the original post uses it at an adjective. While usage of "below" as an adjective is not universal, it is still accepted by some dictionaries. I could only find the Webster English Dictionary as an example, so I suppose it's mostly exclusive to American English. So yes, your example is the more universal mode (as well as my personal preference), but American English generally accepts the above usage as proper grammar. (The sentence above, as well as this one, demonstrate the usage of "above," a relative locus, as both an adjective and a preposition in modern English).
It took me way too long to realize that all words and grammar were made up by some one at some point while they were being silly. Ever since then I came to the conclusion that people can speak however the fuck they want so long as I understand them.
Pretty much. There is good sense in teaching a standard to ensure communication is possible, but language can and does evolve. We should allow the changes to happen and document them for future language nerds.
This is what too much English grammar does to one... I hardly understand myself. But nah lol that's not how I always talk, I was just trying to use perfect grammar since the whole point was to defend an unusual grammatical construct.
There's a fine line between being understood and being misunderstood. They can't just talk however they like if they don't wanna increase the risk of the latter.