Fewer things bother me more than spelling errors. In the day of autocorrect, I feel there’s no excuse for most of them.
I will judge you if you text me with “your welcome.” It’s short for you are… not its own word.
I do know that many of these things are learned early on. Mostly by reading. I don’t know many readers who make these errors.
I am in several online groups, and the reading groups have the most grammatically correct posts with almost perfect spelling. It’s very refreshing.