> lots of the reactors are built by China which takes 5-6 years to do the job. All other countries take more time
This is incorrect: Russia builds new nuclear power plants slower than the average plant built by Japan and Korea in the last decades. The slowpokes are Europe and the U.S.
> happens before the start of construction, doesn't it
No. It’s an ongoing process in developed countries. (Including, increasingly, China.)
Why don't you support your statements with sources?
"the average plant built by Japan"
Japan stopped building reactors after Fukushima disaster. If you cut corners, build a reactor in five years and later it blows up, that's not what you want, isn't it?
"It’s an ongoing process"
What kind of effect does it have on the construction? If none, it's just ongoing show.
"community input, ... environmental reviews"
It all happens before the start of construction, doesn't it?
[0] https://en.wikipedia.org/wiki/List_of_commercial_nuclear_rea...