I believe what they are saying is that to get the most out of your mech or something that you can't get from a vv mod, you need an RBA. This is in fact true as vv's can't fire SLR atties. Therefore mech mods are only better than your vv mod with an rba with a low ohm coil, this does not mean you need to do any of the above. Mech mods without an rba is a lot like buying an HDTV and watching everything in upscaled standard definition though.
I disagree, with proper knowledge, and purchases, one can easily work a mechanical with a carto tank, a Cisco or HH 357 dripper, these are "off the shelf" items that when purchased around the 1.7ohm area, can work wonderfully on a mech! I'm not saying they are better or worse, but they can be used, and do work well in their own right with the right atty on them.
i personally use high-end mechs with high-end rba's, and i agree with soulseek that i probably wouldn't use high-end mechs if i couldn't have the versatility of an rba. if you're going to go this route, i think it just makes sense.
that being said, i also agree that this isn't and shouldn't be considered the only valid use for a mech. i recommend them all the time to people who want/need something that will always just work. i have some cheaper mechs too, and i've beaten the crap out of them, but they keep firing away like they were brand new.
i do think it's better for beginners to start with a vv nowadays, though. i know a lot of people who started years ago had no choice, but with so many options available today, starting with a mech seems like driving without a seatbelt and airbags - 99% of the time, you'll probably be fine, but there have been so many protections and safety features introduced in vv devices that it's almost dumb not to use them (at least until you have a general understanding of battery safety and the risks involved).
And you are starting to see some of my point. No, I don't discourage VV or VW for a new user, but in the link provided, the OP has that and is looking at something else to use.
Yes, I do have some RBA's and RDA's that I use, but I don't feel dissatisfied with a carto tank on one either! I just can't understand the mentality of "Well mech's are only good with RBA's and everything else is going to suck on it!" As I've said, look back even a few years ago, this is what we had, and it worked! There are even more, and better options out there now to improve the experience!
I guess after years of filling carto's with blue foam or tea bags, and what ever other things we had to do back in the day, like washing carto's then spending an evening filling them two days later, I've come to appreciate how simple it is now! I guess many haven't had to do that, so they don't appreciate it as much! Same as I appreciate having the options we do now, VV, VW and a nice selection of mech's. They all have their place, they can all do the same things, just in different ways. I don't think just because it's old and simple, it can't be used in newer ways.