If you write the seed phrase in a special book and are afraid other people can access it, you can use tricks like changing 1 or 2 positions of the words. That way, even if someone steals your phrase, they can't access your wallet. (You just need to change the position of the two words, no need to change too much to confuse yourself).
Your opinion is correct that if someone is worried that someone can steal his wallet's phrases and access his assets, it is important to avoid the risk of this theft completely. But to some extent, it can be prevented by changing the positioning of the words in the phrase. But in my opinion, this is also not a tangible measure of the security standard because when a thief steals, he also has access to it. So, according to my opinion, what is tangible and somewhat more secure is the use of washers. Apparently, this is a bit expensive, but it is a better and safer method than changing the positioning of words in a phrase. Because, according to my opinion, changing the position of words in a phrase can lead to problems, like if you forget the positioning of the words, it will be difficult for you to access your wallet, or it will be your luck to meet.