I hate the anime waifu mentality that makes people "scared" of Miku or puts them off of looking into the games. Miku is literally just the star of a series of super-fun rhythm games with awesome music. Nothing more, nothing less.
All the creepy waifu shit is just added onto that by weird people on the Internet, and of course Rule 34 applies to her just like it does everything else on the Internet. But at her core, Miku is just a super-cool character in a fun rhythm game series.
Andre and Derrick actually do make money from GX; for various reasons, though, they told me up front that they wouldn't be able to add me onto the GX payroll yet, and I was fine with that because I have other gigs that pay the bills (as described). GX has ended up paying off for me in a big way anyway, though; not in money, but in Twitter/Instagram followers and general Internet notoriety/"respect." I'm far more visible on the Internet now than I was before I joined GX, and I just have a ton of fun working with Andre, Derrick, and Tom. It's worth it for that reason alone and I'm able to keep it up without it encroaching upon my jobs that pay the bills.