Yeah, losing a million customers in a matter of weeks does kind of get a company’s attention.
I had the same issue: would sit on discs for weeks, as streaming provided 90% of what we wanted on a whim, while discs require “ok, I’m ready to watch THAT now”. Had long debated cancelling the discs, but frankly the one thing that kept me signed up for 2-discs-a-month was having two queues totaling some 300 titles - too much effort went into making those lists only to abandon them over a couple bucks a month. When that “couple bucks a month” became much more, saying “enough” was easy.
Now an obnoxious question: if customers who cancelled disc service come back, will their disc queues be restored?
When I canceled my disc delivery, my queue stayed intact. I had to go in and manually delete the titles, so unless they changed something, you should be able to get it back.