https://stackoverflow.com/questions/16056135/how-to-use-open...
With that I'm guaranteed AES, a known-good encryption algorithm. I have no idea what these guys are doing without reading through their documentation. Hopefully they didn't roll their own.
I'd be nicer but for the "hopefully they didn't roll their own" at the end.
That is not a solid point.
You've linked to a command that's wrong, from a random internet "everybody gets to answer a question and everybody gets to vote for the best answer, no qualifications required" website, and wrote "with that I'm guaranteed AES, a known-good encryption algorithm" as if that means anything.
The idea that "AES is enough" is like saying you don't need better winter clothes to go skiing because you have a good helmet. There's still more things left you need to protect than that! A secure block cipher mode and key management and IV generation, etc, is mandatory!