As highlighted by Loika on the Diablo 4 subreddit and broken down by Wowhead, the issues with the Reliquary system actually ...

Diablo 4 developer Adam Fletcher pushes players towards the Blizzard research project to help the devs actually make the game ...

You'll notice that the option to purchase with platinum is on the centre of the screen. Not only that, but it's just as prioritised in terms of button size as the "claim" option w ...