I've heard all that and don't believe for a second that if they'd had clearer rules they wouldn't have published them. In the end however, it doesn't matter what their motives are, nor do I need to second-guess them. As a DM, having just run numerous encounters where the rules in question played an important part, I'm happy to pull together some guidelines.
In looking at other DM and player's questions about vision and hiding, I found them numerous enough to easily justify contributing. But again, all I wanted here is help to make these guidelines as good as they can be, not approval to write and submit them. That sounds blunt, but you know - you're the one with that Disclaimer. If it means anything, if I am enjoying what I am doing why are you raining on my parade?
Honestly, this fact was acknowledge in every edition of D&D. There would be rules - as clear, well-tested, and resilient as the designers could craft - and these rules would inevitably not cover everything. The thing with vision and hiding is that it can come up a lot, especially in the Underdark. For some campaigns, it is core gameplay. I think WotC can do better in this area, and again, am happy to spend time mulling over what I've experienced, what others have written or told me about, and attempting to craft something that could help DMs.
Are you asserting that you won't use them in order to... what? Discourage me from writing them? Isn't that at odds with your Standard Disclaimer?
Feel free to write up your own house rules. I don't need them but more power to you.
What I take exception to is the statement is that you "don't believe for a second that if they'd had clearer rules they wouldn't have published them." It's rather insulting.
So believe what you want. I'm glad the rules on stealth are written like they are.
Have a good one.