Yes! Being active politically is always important.

Be civil and polite at first, you want these people on your side after all. But don't be afraid to hold back if they respond with bullshit either. They are your representative, make them represent you and hold them to account if required.

Encouraging friends and family to write is usually a good idea too.

Not being politically engaged, I feel, is one of the main reasons for the downfall of democracy throughout the globe. Too many people think ticking a box every 4-5 years is all they need to do.

Don't use the app then? I have a key thing which works quite well. https://www.mitid.dk/en-gb/get-started-with-mitid/how-to-use-mitid/mitid-code-display/

I don't know myself, but Graphene OS (on Google Pixel phones) has a pretty impressive sandbox layer for the play store and the apps it installs. It might be worth looking into if you're not aware of it currently. (But if you're aware of the Fairphone, I'm guessing you probably know about Graphene).

Also, only officially browser for MitID is fucking Chrome. Always works with Firefox or libreWolf, though. However, I have contacted MitID two times about issues. They are always referring that I should look at the help page supported OS/browser blah blah. They don't care about the part of the population that doesn't use Chrome. Ironic that the same government now screams and shouts about how we have become too reliant on US big tech... Idiotic tech noob politicians.

I’ve never heard of that, so I looked it up. There definitely appear to be non-Google alternatives.