I'm not aware of any threaded bolt or coupling that uses RTV as a sealant.
Not only do blobs squeeze in........but any threaded connection usually backs out.
Also..... the RTV changes the torque reading either higher or lower because it can either lubricate the threads or cause binding.
Yup... it's pretty much maintenance 101. Even fuel lube and o-ring lube can cause issues if you get carried away with it.
I'll say it again, it comes down to personal responsibility. If you decide to take it upon yourself to home build an airplane, then you should also be responsible enough to learn what you need to learn in order to do so. It's not like it's that difficult to find the information. Heck buy a copy of AC 43.13, the FAA AMT handbook, and FAR AMT. and you'll have answers to all your questions. The EAA also has an awesome website with tons of webinars for learning sheetmetal, composite, wood, rigging and every other building skill. Making friends with a trustworthy A&P pr an EAA tech adviser is also smart, but also verify everything they tell you. (I know a few A&Ps I wouldn't trust to work on a Tonka Truck.)
Bottom line is to plead ignorance in today's society where information can be literally at your fingertips (ie there is a AC43.13, and FAR smartphone app) is simply not a valid excuse. It's terrible that people had to die because of what can only be described as willful ignorance.