Origin stories are never going to be fraught, tbh, which is why they're often a bit tedious. I didn't notice the special effects, but I've recently moved my movie watching from the Imax to the local-ish Everyman which, in comparison, is just a big tv.
The MCU might need a creative reboot, but I suspect they're happy with the money they're bringing in. We'll probably get bored with them at some point and bring back, erm, Westerns or some such. I dunno, what is the next genre? There's actually an entire catalogue of Jennifer Aniston romcoms that only I know about, because there's a special alternative universe I used to go to on flights that featured them. Trust me, there are at least seven of them – I've checked – that don't exist in this universe.