You're being unclear because there's something you don't want to say here.
The game is being ported, there is an amount of effort going into it and the publisher intends to distribute the game in physical PS4 copies. You are saying that the remaster is not worth buying, and should be a "free mod".
But a free mod of what? There is no PC version of TZA currently.
You are simultaneously port begging and also considering it a waste of money to pay for a remaster, suggesting that the remaster and an independent PC mod "could be the same thing, if you know what i mean

".
The PS2 version ultimately still used compressed version of their original assets. The remaster is going to be using assets that could not be obtained from ripping the PS2 game. So how could an independent PC mod be the same thing as the PS4 remaster?