That is correct. The new PP changes will make PvP as a main content of this feature. If you want to partake in PP you will have to PvP. There is nothing wrong with this, its one feature that was broken anyway, and they are trying to revive it.
You dont have to participate, the complains are because of jelousy, most people dont bother with PP except module shopping.
Noone is taking your game away, its one broken feature that is moved to open mode to encourage meaningful PVP.
Not all modes require to have the same features, it doesnt make any sense to have a multiplayer content being used in solo mode.
Again your assumptions are speculation, I participate in PP, I have no modules and doubt I ever will. I supported my power in little ways. For me it was being a part of the game. There are others in Solo/PG who play PP for whatever reason they want to. THAT would be taking a part of the game away. The complaints are not out of "jealousy" that is a heap of malarky.
And if you want "meaningful" PVP... moving PP to open only doesn't do that. Having PVPers not be jerks and having battles against each other instead of griefing newer players or people clearly not wanting to PVP... that would be meaningful. Now adding Merits to PVP would be good.. maybe a "scoreboard" of who got the most kills... but they would have to be of other PVPers otherwise the score doesn't count.