I would think if you need a visa use the system, if you just want the minimum no visa stay just arrive like normal. The evisa system worked very well for me in Australia, 3 day turnaround.
It is such a tough job you and your colleagues do to continually answer the same questions about an ever changing system. I appreciate that I can submit questions and can expect quality responses.
Unfortunately the world has to suffer the fools that get their cheap thrills while hiding behind an anonymous keyboard.