Folks can't handle the current alphabet because it's being used in the shittiest way possible

Multi-century archaic spelling, preserved spellings in loaned words despite the sounds being different, hell there was a point where Big Dictionary was shoehorning random letters into words to make them more adjacent to their latin counterparts

By all means you could triple the amount of letters in the alphabet and make it work, but as of now it's kinda just the worst case of sunk-cost to ever exist

In English extra letters could solve a problem as many letters are pronounced differently depending on context making it not very intuitive to spell some words.