There is absolutely 0 comparison in comparing complexity of developing games in RPGM vs god forbid ... Unreal engine.
Unity is generally simpler than Unreal, or rather more accessible, but still ... it's miles apart from something like RPGM.
C# is generally also considered easier to get into, making Unity easier VS Unreal, but still.
Most of these types of ero-RPG games are fairly simple & straight forward after all, many using/abusing a lot of stock RPGM resources and often adding little to no gameplay value on top of the out of the box stuff.
Perhaps adding some open-source (or sometimes paid) plugins implementing pre-existing features other people have built.
Surely you can build 'more' with Unreal, you can build 'more' in Unity. But as a non-developer just looking to offer/build a framework to show off your eros ... there's a damn good reason RPGM is king of the hill ya know.
And well ... this is a 4+ year old game apparently and from what I've read from other DEVs ... you don't 'just' upgrade your game from an old RPGM (like VX Ace) to RPGM MZ. So you're generally stuck with what you started with as long as you keep extending your existing game (and the larger your game is, the more difficult it becomes to 'upgrade').
It's the absolute 'down-side' to having these never ending patreon (often cash grab) development cycles.
