Yeah, sure. That's why the very same article quotes the Commissioner stating that people learning the language often don't find anyone speaking it to actually practice.
"used more than ever" is just a statistical lie. It's based on absolute numbers but to be able to actually use a language, it's the relative numbers that count, i.e. the proportion of Luxembourgish speakers among people being here day to day (600k + 200k frontaliers). That proportion has been dwindling for a long time. And it shows.
(No, I don't vote ADR but I'm fed up with the gaslighting nonetheless.)