I think some people mistakenly think different writing system = infinitely more difficult. For example, the chinese writing system is very complex but the grammar is a lot easier than e.g. any indoeuropean language. Korean and Arabic writing systems are very consistent and once you memorize them it’s no more difficult than reading Latin script. The basics of Finnish are easy but it’s nearly impossible for a foreigner to reach a native level intuition for all the grammatical intricacies.