I think that it will take some time for the word from DC to filter down to everyone in every tower. Keep in mind that ATC is NOT fixated on UAS - they are fixated on manned aircraft, and UAS flight is not only a tiny fraction of their workday (and think about how much brainpower you devote in your own job to things you don't deal with 99.99% of the time), but there are multiple UAS rules (333, hobby, 107) that WE can't even keep straight a lot of the time. How is ATC supposed to keep it all straight, mere weeks after 107 went into effect?
If you doubt this, think of all the interactions we've seen with police who don't know the rules, regulations, and laws that apply in various jurisdictions to drones. They can quote you chapter and verse for public intoxication, but drones? "Hmm, didn't Sarge say that they were bad or something?" It's not (really) their fault, it's something that pretty much never comes up, and with rules, regulations, and laws changing often, well, they can't know everything about everything, and many times clarification is required.
Having a pilot fill out an airspace authorization request on a web page is so far out of the ATC's normal experience that they might as well have read about it in the National Enquirer.
So until the word trickles down, and a given airport that you've worked with has had enough time to learn and digest this, my recommendation would be to file on the web site and give the airport folks a courtesy call telling them that you did so. This way, they :
1. Learn the proper procedure
2. Know that you are following it
3. Still feel involved in it as they are likely to want to be. I can't imagine that they are thrilled to have a DC middleman here.
4. Don't have to feel compelled to grant authorization in violation of the directive that they have to follow (starting in October, anyway).
Reasonable?