[dayjaby]

I don't think that Chinese people have problems knowing how to spell a character as different characters share the same pronunciation (more or less) if they have the same phonetic component[1]. So pinyin helps literally zero.

What is harder is to distinguish the meaning of all these characters. Let's take this set as an example: 里理哩鲤鯉俚娌悝锂鋰

Ok, they are all pronounced the same, but guessing or knowing all their meanings is a different game. "鲤" has to be a fish that's pronounced li3. That might still be easy, but the more abstract the meaning-giving character radical is, the harder it becomes to distinguish all of them.

[1] https://hanzicraft.com/lists/phonetic-sets