My complaint with Qi is the slow rate of charge. I'll happily plug in for 2.1 amp charging.
For phones this is not really a big issue. I use it regularly and it's only a little slower than the wired charging and I did not experience heat issues.And it's inefficient and heats up the battery too much, as well.
For cars ( a la Porsche's claim for their 2019 "Tesla killer") I find it hard to believe they have an efficient way unless they redefine the laws of physics. But maybe they don't care about efficiency liker that...