I wish! Just tried this on the iPhone app (sure it's all the same flavor of electron) but it doesn't work.
I mean Spotify sucks but Electron is a desktop framework, not what their iPhone app is built with, and you can queue by swiping right on their official app.
It does work, I just did on my app, swiping right will show an icon to add to queue on the left side of the track, slide it until it's green.
The iPhone app is not Electron, it's a native app.