If you're running 0.6Ω (which is considerably sub-ohm) you will need a mechanical, as nearly zero vv/vw devices will fire it
Understanding Ohm's Law is only one part of safety. With a mech mod there is nothing stopping you from accidentally putting in a battery backwards. It will still fire. If you short your coil, it will still fire. If you set it down and the fire button is accidently depressed, it will still fire for as long as it is pressed. All of these things are significant safety hazards that are automatically thwarted by a regulated device.
For a truly-new vaper attracted to mech mods for whatever the reason, these are hazards they may not know about.
Anything can be safe if you are knowledgeable and take appropriate precautions. When you're new to it, neither are likely.
What are you talking about no regulated devices will fire a 0.6 ohm coil? DNA20 operated devices most of them will run that coil all day long without so much as blurting out an error code. Other than that I agree with the rest of your comment. Safety and understanding are all key.
I still prefer my regulated devices, I own an MVP V2, SVD, and an iTaste VV V3 which are used with my all day vape liquids and attachments. I stepped into my first mech for simplest of reasons and that was for the purpose of re-building my other Mod attachments, and cleaning the coils, as only a mech allows you to repeated pulse fire a button without shutting it off. I have only recently stepped into sub-ohm RDAs, and still they make me nervous to build to low, even with a vape safe fuse, currently all 4 (Smoktech RDA (Octopus), Smoktech Mini RDA (Squid), 2 Igo-W's) at 2.2 Dual on the Octupus I run on the SVD cranked all the way up to throw something the face of a loud mouthed sub-ohm zealot, Squid is at 2.6ohm single for juice testing, the 2 Igo-W are 0.6ohms and 1.1ohms respectively, excluding the Squid which is wicked with Silica, all 4 are wrapped nano or micro-coil with cotton ball.
It is still all subjective and relative to the end user, and even a new user using a standard Protank on a Mech can get off cigs easily and reliably.
My list of why I stepped into a Mech.
1) Building, re-building, and cleaning coils - the ability to rapidly pulse a coil hot to check for shorts, hot spots during an initial build or re-build, and to burn off carbon on the cleared coil before re-wicking when time to clean it are invaluable
2) As a reliable backup device to my other devices
3) When lounging around and just want to relax with a nice tasting liquid, dripping on my low ohm drippers