Vicarious Visions has used the term "remaster plus" in describing whether the N. Sane Trilogy is a remaster or a remake multiple times. Vicarious Visions Also said that they do not consider it a remake, because they did not "fully remake" the original games, but rather used Naughty Dog's original code and level geometry to rebuild the gameplay from scratch.
Source assets are being used as "blueprints",
to quote VV. In other words, they're simply guides, which makes perfect sense when you consider that said assets are 20 years old and were designed solely with a 20-year-old platform in mind.
As for what the remakes are, well, they
are remakes. "Remaster+" is simply a term VV invented to drive home the fact that it's staying completely true to the original gameplay.
And bullshit Sony definitely spending money.
There's no need to be frustrated, especially as we actually agree. What I said is that Sony isn't funding the project -- or perhaps more accurately, directly funding it.