Dot 5 Silicone fluid opinions

Anyone remember why the early db systems used to have problems with pistons sticking,back in the day? Yeah they would rust up.And there was no silicon on the shelves in those years.
My KBs have been running silicon since assembled in 1998. I cannot recall ever opening the system since, and they are still performing just like new. I cannot see how water would get into the brake system.I mean as far as I can recall, the brake fluid molecules are smaller than the water molecules; so if the brake fluid cannot leak out, then how would water get in? And even if it did, how much and how fast?
Ima thinking somebody would have had to let it get in there. Accidently I'm sure. If I was in the least concerned about water getting into my silicon brake system, I would install a water-trap.
I put silicon in everything I own, and since I did my own miscibility tests, I am not afraid to add it to anything I own either.And I love it that it doesn't attack paint. Almost nothing will break your heart as much as wasting sombody's hi-dollar paint job.
This conversation has raged on for decades. I think it will go on for decades more.