tl;dr Hype coin with only a sliver of utility that can never be profitable
Anyone with any technical background will let you know that mobile mining is inefficient and not profitable for an individual at any scale. As an engineer myself, I've looked into Electroneum's codebase and it's simply a clone of Monero, and I've done plenty of Monero mining to understand when it becomes profitable. They even carried over Monero's patched bugs at one point and had to scramble to fix them. A large part of what's propping up the price/company of ETN is BELIEF from their large user base many of whom don't understand that the utility of the business behind ETN will not reach profitability on an individual basis ever. Many of these reviews call out the "realness" of such a company (an office, a user base, a CEO that is a human!), but if the core business of mobile mining is flawed, what's the point of the hype?
Also take note that the majority of "Not Shady At All" reviews for ETN on this site are driven by lazy shill accounts (anon43, anon44, anon45, ...) along with some autogenerated spam accounts. Seriously guys?