Regarding this site being frequented by DIYers- I agree. These days, anyone with a computer or phone can access any of this info and learn from it. Hopefully, the main thing they leave with is this:
Always follow the local building codes & laws, and the manufacturers installation instructions with whatever product you use. If there's a conflict between any of these - and there frequently is - ask or hire a pro to sort it out for you.
At least some of us are Pro's here and have been in business for decades. Some pro's maintain their edge through continuing education with the manufacturers, local code authorites, forums like this, etc... Most times, we can help folks sort the wheat from the chaff... but not always. The other thing folks should take away is that many here have their own opinions of things formed through direct experience over the course of many years or decades, and that each opinion may be different from others' opinions, AND valid as well. This last part is often the most difficult to grasp, yet is most important to remember.