I am working with a lot of vector layers in a lot of different QGIS projects on a daily basis. When I add a vector layer, I systematically change the stroke symbology to "No line" (transparent color would work too). I am looking for a way to set up QGis so that, whatever the project, all vector layer are always added without the stroke/line. That would be a change to the default configuration of QGis I suppose.

I am aware of the following topics, the solutions work for a single project, but this is an option that one needs to setup for every single project, and I wished it'd apply to all the projects that I open. I have looked at the "user profile" but I couldn't find anything.

https://gis.stackexchange.com/questions/381637/qgis-3-default-marker-symbology

https://gis.stackexchange.com/questions/354423/qgis-default-vector-layer-style

Is there any solution for this?

(I am running QGIS 3.34 on Linux KDE)