Here goes. You must be a democrat. It isn't everyone's responsibility to explain everything to you. And while you can post what you like and insult anyone who disagrees with you...it isn't a good look, especially when you're mostly wrong. Enough of acting like you...here's some useful facts for you in response to your notes. You use a lot of vague terms like "frequent" which mean nothing. My suggestion...try harder to not be a mutton head.
Manufacturers provide oil change intervals (all maint suggestions, as it turns out) based on testing. Actual use can vary significantly. Testing the oil, in this case, is the ONLY way to know when YOUR oil change intervals should be. Most people don't/won't, so we go by guidelines. In general, oil lasts a lot longer than the manufacturer intervals. This interval is extended further still if new oil, with additional additives, is added between changes.
Water does not end up in the sump unless the car isn't allowed to warm and burn it off. This is why idiots who start their car but don't go anywhere damage their engines. Have you ever taken one of these apart. It is a frackin' mess. Here's a simple example from a bike engine.
https://v4dreams.com/shop-blog/please-dont-do-this-to-your-engine5279062
3000 mile oil change intervals in regular passenger vehicles is decades old advice, a waste of oil/filters, and every time someone touches something, there's a risk for an error through the human's actions or a defective part. Aside from extreme conditions like dusty towing environments, even the manufacturers' recommendations are very cautious.
A thin layer of oil is added to a filter not to make removal easier many thousands of miles down the road, but to make installation smoother so that there is a good seal and no risk of tearing/damage...and the ability to apply the right amount of torque. Loose oil filters leak or come off on their own. Tight ones don't like to come off.
Autozone sells mostly garbage and your mentioning them and Scotty explains a lot. Different vehicles may use, or not use, a sealing washer on the drain. There are quite a few kinds of sealing washers. Some can be reused and others not. If you reuse one that is single use, you're nearly guaranteed a leak. Again, please don't give crap advice that might cost someone a $10k engine. Oil lugs are not tightened by hand, but have a torque spec.
Synthetic vs. traditional oil has nothing to do with oil change intervals. Synthetic is a term used to say "particles of the same size." Stop trying to look smart. Oil is used to lubricate the engine, transfer particles to the oil filter, and transfer heat (something it shares with the coolant system). Clean oil of the right viscosity with the right additives still present is what determines when oil changes are actually needed...not a book or Internet thug. I have no idea what you mean by push an oil change. I neither push nor pull mine. On each of the many vehicles I own, I occasionally have the oil tested. That tells me if I have any issues internal to the engine and also how the oil is holding up at given mileage. That is what determines my oil change intervals....facts.
Try not to be an Internet dick and for the love of the gods, ditch "scotty" the village idiot and get an education.