Troy, a few things maybe, unfortunately, yes reviews do have a way of swaying(?) a lot of folks minds, always have, probably always will. Sometimes no review is better than a crappy one in the wrong persons hand or ears, although not many bad reviews anymore it seems.
Also, while Micromega has done a lot better with regard to dealer support and presence here in the US, that hasn't always been the case, and sometimes lack of support can be a huge deal breaker. Get me once, won't get me twice. As I said, I think that support is much better these days.
I own an all-in-one myself too, won't Naim Naims, hah, but with the brand, I know I have solid support and a very good history of upgrading, hardware/firmware etc. Hard to say how Micromega will do long term. My basic unit has been around since 2010, still going strong. Yes, new Uniti series is on the way, but for a digital product, 7-8 years is pretty darn good.
And lastly for now, it is a digital product in one box. As others have mentioned, there still is that audiophile mentality-right or wrong, that individual boxes are "better". Not to mention being able to upgrade certain parts if/when the technology changes or improves.
Personally, I like the looks of the Micromega unit, and maybe if I hadn't purchased my Uniti long ago, I might have given it a go. I would say though, you are just going to have to do your best to "sell" the unit to people that are on the fence. Most die-hard audiophiles won't necessarily be your target here in general. Hopefully, if the unit really is a great piece and sounds great, it will help sell itself. FWIW.
PS-I am on your side in that there really is an awful lot to like in products like these, and for me I have to say that I do not feel short changed in any way when it has come to sound quality by "downsizing" to what many here would call a "lifestyle" product. To me it makes great music, simple and less fuss!