All of what you've said may be true, but the site in question had been a gas station. How many residents got displaced when it became a truck depot?

"All Filipino food is home food" is an overbroad statement -- if you talk about Filipino street food, even excluding pork bbq on a stick, there's turon (fried banana sliced lengthwise, seasoned with brown sugar), fish balls (small patties of fish meat and dough fried), isaw (fried pig/chicken intestines), taho (silken tofu dessert adopted from Hokkien immigrants) etc. Not to mention seasonal desserts like puto bumbong (rice cake) and bibingka (coconut & rice cake) and outlier dishes like pancit habhab (a noodle dish).

I think the issue is that by the time Filipino society had urbanized enough to develop new main dishes, the fast-food restaurant concept had already arrived. So the Philippines ended up "innovating" dishes like Filipino-style spaghetti.