CGI today is simply phenomenal and can be used for such amazing things. Period pieces like Mindhunter can create scenes on a scale they simply couldn't have done before CG budgets came down, it actually enhances storytelling.
I think the issue that mega blockbusters like the last Avengers movies have is not one of quality of assets, Thanos and smart Hulk are the absolute peak of modelling and animation, but one of composition. Many different effects companies work on different aspects of a single shot and with tight time constraints involved and things constantly changing all these different parts coming together may not mesh perfectly every time. That's the reason Avatar still holds up I think, It's just Weta and ILM with Cameron having a very specific vision.