Come on Heather, it was the first line of the opening post:
That said, I agree with you on the big picture...
Using tubes is certainly not the kind of rule I would personally follow (let alone enforce!).
I think those words from Heater are wise and you should meditate them before criticizing other members' systems:
And here is a quote of
Greg Timbers himself (whom opinion I am sure you will respect) on the same line:
So please Martin, act more friendly and try not to hurt anyone's sensibility. After all we are here to share, and only for the fun.