I visited a few of them when I started hobbying, and I've stayed away from most of them for various reasons.
First off, the pics are always fake. Even the most reputable Asian providers use fake pics, either for anonymity or just to bait potential clients. Whether the fake pics resemble to person varies.
Whether they deliver on services promised in ads/texts also varies. A lot of Asian providers have poor English skills, and rely on pimps/handlers to create ads for them or even to manage texts. There's often a discrepancy between services promised, and how much they charge.
Lastly, and the reason why I stop seing providers like the ones you listed, is mostly that I just get a bad feeling after I visit them. Most have next to no spoken english ability, have their ads and texts managed by someone else, and have pretty low restrictions with next to no screening and for relatively cheap. I worry that a lot of them aren't here legally and are in some sort of indentured servitude or worse. It's not really something you can know before visiting, but visitng them does not feel remotely ethical.
This isn't a blanket statement for all asians. Most spas with business addresses are legit, and some indy providers, such as Rada (who I've seen and can recommend) and Sara (who I haven't seen, but has good reviews) don't fall into the above issues, save for maybe the fake pics.
One thing you can do is to take the phone number, and run it through google or sumosearch. If it comes up with different providers for the same number in the same city, it's likely that it's a trafficking operation that swaps out providers regularly. (The ad you provided, number ending in 9786, definitely falls under this)