OPPO's 65W fast charging is a welcome feat.
Hence the lack of wireless. The OPPO / OnePlus charge system is the best around and plugging in to charge fully in minutes kicks the crap out of sitting around waiting for it to sloooowwwlllyyyy absorb power wirelessly.
Also, as I have pointed out before, plugging in can be slightly annoying once a day (or even twice in extreme use) but the extra thickness and weight provided by the wireless induction coils is annoying every time I pick up a phone so equipped.