Takes time to develop such system.
Cheat modes can pretty much bypass the stat's requirement with a single click. Almost the same effect. A lot of work were involved into this new free roam mode, which means work hours were put to develop it, instead of story progression, which means delay/lack of content.
As JJJ already pointed out, past experience shows that cheats can screw up your save to where no progression possible anymore and at the least make you miss content.
Also I respectfully disagree that this is "lack of content". It is a different content, correct, and some players may prefer straight up told story to gameplay mechanics, which is fine. However, in this wide, vast world of sick fetishes, a few of them are along the lines of "playing a game" and "earning a reward" - fetishes where others, even loli incest necrophiliacs, may say "this is too much" but I happen to enjoy these kinks.
If you can skip them without hurting your game, sure, knock yourself out. But for others it's part of the experience and thus it is content. Not least because during the roaming you also get some background on the stuff that's happening.