Keep in mind that a large portion of players don’t have it installed on Steam and use the Battle.net launcher instead (like me).
I’m an MTGO believer as well, but what regular game actions take you 15+ (I know you’re exaggerating) clicks on Arena? The interface isn’t perfect on Arena, but it’s decently functional most of the time. My gripes with Arena are mainly the monetization strategies and the insane amount of time it takes them to add cards (even with the supposed machine learning to program the cards) and features (practically none get added anymore).
They aimed to do better than MTGO with its spaghetti code made by underpaid developers, and they ended up with the flashier looking Arena with spaghetti code made by underpaid developers. They also made sure it was missing half of the game’s cards and the capability to implement much wanted features like more than two player matches and spectator mode.
I’ve always just dragged the cards rather than using successive taps. It’s pretty intuitive in my opinion. I would have never thought to call that a virtual mouse…
Deselecting a card without casting it can be a little tricky, but you can usually tap another card or something without causing an issue.
I don’t think I saw anymore mention Brotato or Balatro. Both fantastic and worth every penny.