(at least when it comes to languages based on the Latin script)
Also, if you talk on some mid level (say B1, which takes a LOT of effort for french language), you are not going to get laughed at and ridiculed when using it in UK/US/Australia/NZ etc with english. A very common experience in France when trying to use french (I go there every other weekend, its just across the border). Folks from other parts of former french empire like quebecois or corsicans are much more approachable in this and tolerant. Suffice to say their language variant is often mocked by mainland french too, I think personally parisians are the most cocky ones.
un chapeau, des chapeaux -> one hat, hats
I would say it’s technical debt but rest assured that the language is alive and will eventually drop the x. Perhaps we will have a s instead of a x first.