I have had several mirrorless bodies, Sony A6000, Fuji XPro3, Fuji X-E4, but my Sony A7iii is the only one on which I seem to have sensor dust every single time I swap lenses…
Brand by brand how impacted are you by this issue ? Do you think that there are specific models which exhibit this issue more than others ?
Sony sensors are notoriously bad at discharging the sensors when powering down. That creates a lot of static. I recently switched from Fuji to Sony and I have had dust spots 4 times in 3 months. Compared to 0 times in my 2 years with Fuji. A local Fuji user also carries his full kit without a single lens/back cap. And he stores lenses in his pockets without lens caps and gets zero dust issues.