You won't get banned here for recommending tuta.
It has been recommended several times (which is ok), but would be nice if you'd edit your post to, let's say, tell your experiences with it and thoughts after switching to it.
Really appreciate when someone makes a post about their own experiences so I can stop googling "reddit tutamail experiences".
But yeah, you won't get banned for this post here.
Siemens is finally moving on to BSD IIRC and (slowly) industrial PC's are going to switch over.
Last new industrial windows based PC, server, as well as HMI I installed was in 2022. But yeah it's slow.