Mistake is inevitable, if there is no mistake there is no correction, that is, people make mistake and through the mistake, corrections are made. Most users submit their post without cross checking the write up. So in many times omissions occurred and some ungrammatical statement occurred and English speaking users see them as trash, shit post without correction. It is better you reread you work before posting to avoid mistake. Be a good poster. Avoid mistake. But mistake is inevitable. It most come but not always.
I make many mistakes when I write, and most of the time, I get help from some tools that help me improve my writing. The one tool I use is Grammarly. Grammarly always points out spelling mistakes, grammatical errors, and many more things. It's helping me improve my writing skills. So, when I write without Grammarly, sometimes I write trash. It happens when I write from my mobile device. Your suggestion is good for others, for me too. But, since I am using a tool to improve my writing, I usually do not double-check what I have written. Because I believe the tool will find the mistake for me.