Here's one datapoint, as a native English speaker I used to mix up "your" and "to" and still always mix up "it's", use "alot", etc. I learned English orally so

Here's one datapoint, as a native English speaker I used to mix up "your" and "to" and still always mix up "it's", use "alot", etc. I learned English orally so in my brain they are literally the same words. Over time I've learned to distinguish them. I think you vastly overestimate how many people are aware of these things. The people that are aware, are only aware because of experience with assholes like you. You don't need to show off how clever you are that you know some pointless rule. Like Jesus, how fucking arrogant and smug you must be to say "you probably aren't very smart" over a trivial grammar mistake. There may be some correlation between spelling errors and intelligence, but certainly not a 100% correlation.