The context of my original comment is the base iPhone model. Nonetheless, it’s still to be noted that the default charger that came with your iPhone 11 (18 W, not 20 W) still delivers 45% less power than the default 33 W charger that came with my OnePlus Nord N20 5G.
From what I can read online, it takes one hour to go from 0 to 80% on an iPhone 11 Pro using the default charger. It takes my phone a bit over half an hour.
Remember, I am comparing an iPhone with an MSRP of $999 to a phone that I bought for $150. Refurbished iPhone 11 Pros still sell for $300.
I believe that my point that iPhones have comparatively poor chargers for their price point stands. Charging technology has not changed significantly from then to now. The effect of Apple’s recalcitrance is that even the cheapest Android phones can run circles around iPhones when it comes to charging. I hope Apple with take this opportunity to deliver a better product for their users rather than making only incremental improvements to old technology.
A reminder for context: it’s not summer yet in Antarctica. Summer doesn’t start until December. It’s still supposed to be cold.