You are right. Some posts are difficult to read and understand. So many silly mistakes which could be easily avoided with just simple attention and proofreading before hitting publish button. But we are so busy and in a hurry that we do not read after write. Most mistakes are not for not being a native English speaker I think.
By the way, Nice article.
Tips for newbies : How to give a fractional upvote when your SP is below 500?
Yeah, that too. Being in a hurry and not proofreading. Even if you have Grammarly there can still be mistakes. I know it's not all non-native speakers. As I said in the post, plenty of Americans can't, or at least don't, speak English properly.
I struggled for a long time to get my SP over 500. I finally got someone to delegate me some to get over. Now that I'm over on my own, and she took her's back, I see there is a way for fractional upvotes. I'll have to read that and save it in case someone else asks about it later.