This is rather a PR move by him. If he really wants cryptocurrency he can sell it for fiat and then buy crypto. The result will be the same because there are no fes when you buy cryptocurrency OTC and very little fees when you buy on exchange.
Also selling for fiat would be much easier because not many people own crypto compared to those who own fiat.
This is likely to be true, but with the unregulated nature of crypto in the Philippines, its especially a place where some fiat-related headaches can be avoided. I know a lot of business in the PI will only take cash: car dealerships, for instance. So if you can pay for something in crypto it would save you a lot of trips to the ATM (only 10,000 PHP, or ~$200 can be withdrawn at a time, and holding huge amounts of cash also makes you a target).
I dont think its a PR move. The owner probably just wanted to add an option for buyers. Maybe he just wants his property to be sold immediately, and he knows that those who can afford it probably might own crypto. I dont think this is such a big deal, but its cool to see how there are some already very open to the use of crypto even while there are limited merchant vendors in the Philippines where you can use and purchase crypto.