Thing is, I've heard the same kinds of complaints early in a new edition before, and it turned out, yeah, the wizard was different than in the prior edition, but not underpowered nor 'overcorrected,' just not as crazy as before.
3.x/PF1 was very much a highwater mark for wizard power & versatility. I'm not surprised, well, anything, might seem like a come-down from that, at first.
I'll be curious how things sound after we've seen some more experiences, some supplements and some optimization guides. And when the sheen has come off the melee types new action-economy toys.