This isn't just double space = '.' either since you can just turn that off in options.
iOS also changes the keyboard layout depending on usage. So when you're in a browser like safari or Chrome and you tap the address bar which these days is 99% used as a search bar with no particular need for a prominent '.' you get a prominent '.' for no good reason.
A huge '.' right next to the space that's not even correctly recognizing the touch area in a context where you actually likely type '.' less often than any other form of writing. You cannot change this behavior.
Fwiw i made a mistake of switching to iOS from Android due to a lot of peer pressure. "iOS is better, you should switch" the wife said. Well I've switched. Now i have a terrible keyboard, i don't have any call screening and non existing text spam filtering. I'm yet to see any improvements.
I remember when this first became an issue, then they tweaked something and I noticed it a lot less. Something changed again recently (last couple years) where this is happening a lot again.
I appreciate how Apple pioneered the touchscreen mobile device, largely due to the implementation of the keyboard, but it needs to be more stable than this.
SwiftKey was actually good. I could pound out a solid 30WPM without even trying, no typos. But then they added a "Ask Bing" context menu item to all my selections after an update and after leaving it on principle I've been suffering ever since.
try thumb-key [0] if you're willing to go for something unorthodox :-) the swipe-style keyboard cut my typos by ~90% (though i was particularly bad at using phone keyboards, lol).
that's the most annoying to me, when they put a large "enter" key, or "@" or "." just next to the space, and you want to type with both hands, and you keep hitting that with the right thumb
