I taught my daughter the sounds of each letter, then we moved on to sounding out two-letter words, then three and four. I pointed out which words were weird and why and we moved on. I then started doing the Bob books with her before she was 5 and then switched to the little Disney short books and Dr. Seuss. Now she's in first grade reading chapter books meant for those in 4th-6th grade, while her classmates are still learning phonics instead of reading. Thankfully her teacher lets me pack her books and she can read those on her own instead of continuing the same tablet lessons she's done a dozen times.
I realize not all parents have prioritized reading like I have and that can be challenging to teachers, but a big push should be to teach them enough to get them reading very simple "see spot run" type books and then plenty of practice where things gradually increase in complexity with amount of words, vocabulary, and words with unconventional pronunciation. The human brain will pick up all the words eventually without needing to try to apply 50 different phonics rules. It's just like with common core math where they have a really neat concept to try to make math more intuitive (and it's great for some students), but to many...it means they're just hopelessly confused and never even learn what would have been common for students 30 years ago.