Any attempts at standardization would actually be worse, because now they build each ship for exactly one actual canal. With standardization they'd get built to some document that will get interpreted slightly different in every place.
The alternative is simply to continue as it is, with ship builders squeezing every inch just because they can, and it becomes a matter of if, not when, another EverGiven happens.
But as the Evergiven incident has shown, it has a limit. We were lucky it didn't get stuck worse than it has.
At some point it makes sense to just blow up the ship to free the channel.
I think it's always interesting to get another perspective and I am somewhat disappointed that people have downvoted you without even wanting to hear your reasons. Such conversations are always an opportunity to either learn or to teach for those that are open to it.