One can only hope that Netflix does not give space to the usual Western propaganda... I hope it's just a sweet classic comedy, without the politics and social engineering
There are also dozens of shows with FL older than ML. If you don't like the theme, don't watch it!
Even on this site, if you try to search for Sniper Butterfly or My Dearest Nemesis you will find among the tags "Older Woman/Younger Man" and by selecting you will find hundreds of dramas with age gap in which FL is older.
Then if you don't like a genre, you're free not to watch it, but probably if things like this are produced it's because they have a target audience that must be respected.
It's a source of great sadness for me to see how the nihilism and Satanism prevalent in the West are slowly corrupting Kdramaland. Fortunately, Cdramaland stands firm in defense of common sense and decency.
Then if you don't like a genre, you're free not to watch it, but probably if things like this are produced it's because they have a target audience that must be respected.