where did you hear this from??? Hahaha not true at this time.
No need to show bank statements every year or upon re-entry (assuming not using an extension because that is unknown and might vary between immigration offices)
Just do a border run. It's easy and you don't have to do any paperwork or anything, just show your DTV letter. When you return you'll get another 180 day stamp.
Incorrect on the other point. You can come and go as often as you wish during thr 5 years. Each time you enter you will get a 180 stamp. If you wish to extend that you can extend each time (not just once during 5 years).
But if you do what you mentioned for avoiding 90 day reports then there wouldn't be an opportunity for an extension because you would get new 180 day entry stamps each time.
With this visa, it might be possible to squeeze almost 6 years out of it by the way. Enter once right before the 5 years is over. Then extend.
Yes but word it a little differently. Not "pay himself" but write that xyz company employs you, your responsibilities, gets a salary of x amount, and specifically state that you are allowed to with remotely in Thailand.
Provide company business license, EIN, registration docs.
This is separate from the 500,000 baht in your personal bank account requirement. Still need to do this as well. Can not be the business account.
Two completely separate things. One is a visa that allows you to stay for up to 180 days, and the 90 day report is to update immigration where your staying during that time.