

Japanese kids learn the alphabet in primary school to do Romanisation of their own language and then for English class. There are no problems with the former because they can see and read those everywhere. English is a particularly difficult alphabet language to read so that’s hard. But on a certain level there is relief that there aren’t an additional 2000 Kanji characters to learn to be able to read it. It’s a radically different language so it’s hard either way.
Mandarin learners must pick up Pinyin, at least in the mainland, fairly early. I’m guessing primary school as well.
Both Pinyin and Romaji use the alphabet to make sounds that don’t exist in English. Like rya in Japanese or the distinction between q, ch, and zh in Mandarin. Both mainly use qwerty keyboards for typing their own language.
Gendered languages flummox even learners from the country next door. The biggest obstacle to learning English in Asia isn’t the different writing system or even the insane spelling conventions of English or French. It’s mastering indefinite and definite articles, when to use either or none, that makes them pull their hair out. It doesn’t matter which European language you pick, it makes no sense, it’s vibe based more than anything, and it isn’t the same between French and German or English and Spanish. So knowing one language already is only of limited use.
I’m going to theorise that a writing system with spaces between words helps learners to grasp what is an equivalent unit in their own language. To a point because you get words like antiestablishmentarianism in English or Verwaltungsfachangestellte (an administrative assistant in the public service sector) in German and all bets are off.

When I hear “I’m seeing X everywhere,” I suspect you might be Baader-Meinhoffing.