This was a local party event, media verified it as referring to the 100% property tax. There have been no official announcements, nor has the Spanish media (left or right) picked up the story.
Yeah they "were told not to publish" in the middle of an unprecedented media barrage against his wife, brother, attorney general. Actual media verified the quote with the party; that's why no Spanish media, nor no serious foreign outlet has picked up the story.
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https://www.spanishpropertyinsight.com/2025/01/20/spanish-pm-now-aims-for-outright-ban-on-non-resident-buyers-from-outside-the-eu/