I dont have file sharing between my phone and other devices

That's patently false. If your device has internet, and your phone has internet, you have file sharing. Email it to yourself if you're too lazy to set up anything else. It takes like 30 seconds.

I'd argue that anything you could post that isn't worth taking that small bit of extra time isn't worth posting in the first place. If you want your discussion places to stay quality and attract quality content, then you need to put forth a bare minimum bit of effort. Communities already trend towards lower effort as they grow in size, there's no need to accelerate that to save yourself a few seconds.

Beyond that, setting up a file share on your home network isn't that tough if you have any interest in doing it.