Yes, housing cost is one of the factors mentioned in the article - not only because hotels and other infrastructure built for short-term tourists, but also because wealthy Germans love buying houses on Mallorca. Since wages are much higher in Germany, they can easily outcompete the citizens.

There is also the issue of behaviour which the other reply to your comment already mentioned. As a German, I can 100% confirm that the average Mallorca tourist goes there for the sole purpose of "letting loose for a bit". The holiday stories always boil down to "yeah haha I puked into somebody's flower pots on the way back to the hotel, it was craaazy".

And I have reason to assume that the long-term tourists and full-on German immigrants are sometimes as bad as the short-term party tourists, just in a different way. I don't have much experience with people who emigrate to Spain, but the German immigrants in Greece are notoriously ignorant about saving water during droughts and shit like that. They'll keep their lawns watered, their cars washed, and their pools topped off when locals are trying to save every drop. They also never try to learn Greek and think it's unacceptable when the cashier at the supermarket doesn't understand their broken English (often flat-out saying that statements like "immigrants should put in effort to integrate themselves by learning their new home country's language" don't apply to them because they are already doing Greece enough favours by living and spending their money there).