Anybody who owns real estate isn't concerned with foreign buyers. They help keep prices for real estate higher which amongst real estate owners creates additional wealth. For people who don't own real estate, those higher prices make it more difficult for them to get into a home so there are positives and negatives in this.

That said, I think the old "unoccupied houses" thing is way overblown. It presents the most ugly side of foreign real estate ownership so that people who are priced out of the market get angry at all of the foreigners buying property. Even if you removed every unoccupied SFH (single family home) from the market, prices, generally, would still be rising.

It's sort of like saying that the reason that a car costs so much is because the demand is high based on too many families owning more cars than they need. It gives people a target for their dissatisfaction with current auto prices but really isn't the main issue and even if you solved for that issue it wouldn't dramatically impact auto prices.

But having a target for your anger is a wonderful way to distract people.