Did that bother you any 
I make typos all the time. Many I catch during the ninja edit window, but I miss a good portion too.
I think topic Titles are more important to fix in terms of spelling errors. They have more visibility.
I guess it depends on how much the error affects understanding.
If I post “It’s to big a problem” does “to” need to be changed to “too” ?
If I post “I like it’s look” does “it’s” need to be changed to “its” ?
Different story if it might mean a search for a certain word would be missed. eg. “intsalled the plugin”
Get into fixing grammatical sentence structure and that’s a whole other can of worms.