My guess is no. Only extensions that are compatible with version 9+ are available in the current marketplace and I don’t see Stucco listed there. However, it’s possible that the developer just didn’t have a chance to verify compatibility before the change, so it’s possible that it may work. The only way to know for sure is to try on a backup copy of your website.
The developers are active in the forums and the theme was free, so maybe reach out to @MacareuxDigital and see what they have to say. Maybe they will develop it further or offer it to other developers to update.
edit: I see you’ve asked the same question in the #日本語 channel, so you’ll probably get an answer there.