Provari didn't work for some but in our conforming society, that is not enough and more must be extracted - humiliation is preferred. I like REO but my lovely wife and my daughter are quite taken with a Radius and a P3.
I like reo's too but I'm not versed enough with mechs to be comfortable using them on a regular basis. I have a couple mechs I use from time to time just to learn them and will get a reo to add to the collection soon.
I got into provaris when all of my China mods died within the same month. I have 2.5's, p3's, radius(40 and 60w) and a Procyon. I use everything from naughties and kayfuns to sub ohm tanks and drippers and have had no issues with provaris working on any set up except super sub ohm builds.
The regs aren't the only reason provape closed but the biggest one because they impact so many other areas. Projects I know they were working on had to be scrapped because they couldn't be done in time to meet the deadline and still meet their high standards.
It all boils down to them seeing their future profitability being taken out of their control and their values being compromised. When you talking about investing millions of dollars without any possibility of a return for a minimum of 3 years with no guarantee of coming to market with a product due to no choice of your own, and possibly not breaking even for a few years or more after that, it not an attractive position.
Still, there is no reason to continually bash them as a company, especially when you know jack squat about their situation( and the vape market in general). Their record has been second to none.