I can complete the water r4 accs with a SR-only party with my Thunder grid now. And my grids have no p2w in them. Of course, new or casual players won't get to grids like that. That is why I made the distinction in my post between players with the right grids and players without them.
Your question is more akin to "how can I be super lazy and still get everything I want?" The plain & simple answer is you can't. Unless you put in the work.