Its almost 3 years old, or am I wrong?
That's working on AVN time, in terms of regular game development it's only 1 year old tops
No but when you compare man-hours rather than just time passed, regular games take way, way, way more, because their team sizes are orders of magnitude bigger than AVNs, which are typically one person who hires other part time. Which is justified because regular games have so much more production value in them. Even indie games typically take far longer in man-hours; Hollow Knight took approximately 3 years to make with a full-time team of 3 + contractors, which is again justified because Hollow Knight is an amazing game with masses of content and production value, and was only possible because it received way more funding than any AVN.
The way I see it, we will all have to suffer with extremely long AVN production times and drip-feed updates rather than full releases until the genre goes mainstream enough to raise lots of money on platforms like kickstarter and get picked up by big studios. Only then can be rid of patreon bullshit, and only then can we get proper advertising rather than word of mouth on internet forums. Let's just hope the world doesn't slide backwards from its 20th century sexual awakening, though seeing how things are going and the pressure to censure online pornography, I'm not optimistic.