Its better for you than other gel polish because it has no solvents!! Therefore less harmful.
Many Gel Polish brands don't contain solvents for the purpose of curing via evaporation as they primarily cure with UV light. A hybrid like Shellac uses UV Light but also solvents to create a coating which is generally considered easier to remove.
I do not know why anyone is purporting solvents to be dangerous in the salon. I do not know of any salons that have been cited for solvent overexposure. Solvents used for evaporation curing in the salon are very limited and typically many, many times below any kind of safety threshold level. With the advent of Gel Polishes, I would think that number has dropped even more.
It is worth keeping in mind that a solvent is a substance that can dissolve another substance. Water is a solvent. Whatever their special remover is... is a solvent.
Also comparing their MSDS to another Gel Polish like... say... Gelish makes me scratch my head in identifying how they qualify as Eco but Gelish doesn't. In fact, I don't know what being Eco really means in the context of plastic, cosmetic coatings packed with monomers, oligomers and photoinitiators. What is the qualification for Eco? I believe I read that it is because its ingredient count (which appears to be the same as Gelish too). Regardless, number of ingredients are really not as important as the %.
I love new products and applaud innovation. However I hope you leave innovation to the R&D guys, not with marketers who seem to be implying that professionals should be using the product not because of its performance and customer satisfaction - but because it is "eco", "solvent free" and "safer" than other products in the market. This feels like a heavy use of buzz words and scare tactics without substantiation. Which I believe is why some people may be confused.