Thanks for the suggestion, I installed this already (see Edit 2 above) and I quite like it … I’ll have to see whether I can get it to work reliably.
Good to know it works for you, perhaps it’s a launcher thing on my side, will try an alpha of Lawnchair 2 when I have time.
I take it for granted that almost every free weather App or provider wants to have a movement profile, “there is no such thing as a free lunch” afterall 
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I only use what can be set to a fixed place in the settings instead of following me around all the time. (A compromise, I know, I’d still have to trust that setting.)