I guess what I’m also kinda complaining about is why is Apple‘s 20W charger so HUGE! Look at the small-size that Anker has/had provided for 30W;
Two possible reasons. Apple may be sitting on a huge pile of those chargers. The small ones Anker sells are newer GaN (Galidium Nitride) chargers that can be made denser.
My MBP uses a 96W charger, but when I travel I only bring a single 20W charger. Thats really all I need (when I’m not doing more intense stuff) to keep both my laptop and iPhone charged up.
20W should work fine for an iPad. If you feel like you need the more powerful one, I think that’s an upgrade option.