Swiftkey is not what it was...
I use Swiftkey and have done for probably 10+ years. A few years back, I started noticing it seemed to be going downhill rather badly. It would randomly delete words I'd just typed and occasionally I'd type a word only to look up and see it was total gibberish e.g. I'd see dsczkudjr instead of the word gibberish! Some of the predictions were miles off what I was looking for. And then, one day, I noticed it no longer said SwiftKey on the space bar; it now said Microsoft Swiftkey. 'Ahhhh!' I thought, 'That explains it!' I've now set my expectations accordingly i.e. at rock bottom.
So be careful what you wish for: if they bring back Swype, you can be sure it will not be the Swype you remember. Nostalgia is not what it used to be, after all.