It's been a requirement since around 2012. I entered our tax information around that time. It's all been fine...
... Until this change. A fewbweeks ago, I received that ominous message demanding tax information again. So, I re-entered it. I presume it's all good again. Until the next update.
But there's truth in the previous messages regarding listings in country-A, owned and operated by owner in country-B. I'm not sure how you can collect money in country-A without reporting and paying tax in that country. Here in Spain, that wound be blatant tax evasion, and they could take your property from you
I remember some years ago when (Balearics) changed tourism law requiring tourism licensing, which ostensibly requires tax registration. Oh, the screaming! Those who bought a flat in Mallorca, using it two weeks or year, the rest of the year letting it out on Airbnb to tourists... Collecting the money tax free... Well, that came to an abrupt end.
So, beware, if you're collecting rent money in country-A, and not declaring it in that country, you could be in for a world of hurt.