I suspect this is part of it. Blackmagic pretty much gives MacOS Resolve away (unless you need the Studio version which is both unnecessary for most functionality and is pretty cheap regardless). They're making their money with hardware. If this is a first foray into tying that hardware into the iPad ecosystem, well, that's pretty smart.The only benefit I see is getting teens or hobbyists to start using Resolve so if they graduate to desktop use they are more likely stay with Resolve.
Blackmagic the company is solid. They provided me some email support for the free version of Resolve and were quick to indicate that I should write back if I ran into any other issues. You better believe that when I need to buy hardware, I look at their offerings first. I've heard similar stories from others.
Here's an anecdote for how that can turn out: Figure53 (the company behind QLab) also allow their software to be used without a license, albeit with some functionality restrictions. Allowing people to use the software for real projects (and, no doubt by putting out the best software of its kind IMO) has entrenched QLab pretty solidly into all sizes of theaters. A full 100% of the productions I've worked on in the last decade -- 100 shows or so -- have built sound on QLab and most have used the (paid) video features when video was required.