I think the Mudita Kompakt would be a more trustworthy phone because the manufacturer is based in Poland and it can be rooted and ADB isn't blocked. I'd never in a million years want to put a banking app on a Bigme.
Downsides to the Kompakt are: 4.3 inch screen and Android 12 (if I recall correctly).
Upsides: rootable, ADB works, headphone jack, there's a kill switch, etc.
I almost bought it, but I was under the impression there is no button to clear out ghosting (correct me if I'm wrong) and I had also put in an order for the upcoming Brax3 which they say has no PWM.