If you actually read what people are saying, the main point isn't that they're closed, it's that they're not advertised as closed.
But as I said, if parks outside of the Merlin group can open all / the majority of their attractions then there's no excuse Merlin can't.
- Pleasure Beach have re-opened with all attractions bar a select few that include touching a lot of surfaces / social distancing cant be implemented ,i.e Impossible, Chinese Puzzle Maze.
- PortAventura are opening with attractions bar children's play areas.
- Disneyland Paris are opening with all attractions bar children's play areas and shows.
- Universal have opened with all attractions bar shows.
- Europa Park have opened with all attractions bar children's play areas and shows.
...and on a slightly different note, Chessington and Legoland have opened with indoor attractions meaning some indoor attractions meaning there is no need for Duel to be closed at Towers.
So actually, yes, I would expect the majority of attractions to be open, and if not they should be advertised as such.