You want a device that's only available on Star Fleet ships as part of the crew and probably limited only to a subset of higher ranking members of the crew? A major difference between the holodeck and deep fakes is that what happens in the holodeck stays in the holodeck - unless it gets out, in which case it usually becomes an illustration of why it should have been kept in.

Call me a luddite, but I don't think going through a phase where bad actors have the power to set every democracy back by centuries through misinformation and other bad actors have an infinite kiddy porn machine is worth it for what ultimately amounts to a luxury VR Video game that, if even possible to exist (the holodeck isn't a "technology", it is a narrative device), would be something that realistically only the ultra-rich would be able to use (because let's face it, Star Trek's post-capitalist utopia isn't happening)