It's a special fun stage. It'll exipire in 8 days 19 hours and will never came back. It may have an easier and harder versions availables later for ever.
You still have time to get Honeysuckle School though. I found the back way easier than the top way. Honeysuckle can be a huge pain (and that the perfect case of negate damages turn 1 being useful).
Anyway, congrats for at least clearing it. That's nice
Fun fact, the stage cost no stamina and gives ~3300 gold and some regular gacha seeds. With auto-run, it's free gold source. Not game changing but that's still cool.
ATK debuff is almost mandatory late game. And even with -70% ATK you take huge chuncks of damages.

Well. There is crazy people about popularity poll. I prefer using them for farming usefull ressources or exp when there is a huge bonus. Even if leveling spirits key stages are better for this.