Not to mention, there are fluctuations seen in quarterly data, which may be what they are referring to. A link to the government's own numbers comparing the end of third quarter 2025 with the end of the third quarter 2024 did not show anything like what he is speaking of. https://www.fhfa.gov/news/news-release/u.s.-house-prices-rise-2.2-percent-year-over-year-up-0.2-percent-quarter-over-quarter
Not to mention, housing prices declining is not necessarily a positive thing for all or the economy as a whole. For people who recently bought a home and put down the minimum amount, could end up under water on the house as many did in 2008. If for any reason they had to sell their home, they end up losing what ever they put down and owing more money to close the mortgage than the house sells for.
Not to mention even if Trump actually was saving people money, which he isn't, what about the way he is using money - like spending billions creating an oversized ICE secret police, destroying our edge in education and research etc. Almost everything he is doing makes us less secure and poorer.