I don’t think this is the “conventional wisdom”!
This guy asked what we will use in the front-end. I said react and he was like "amazing, good job, it will be great" and the talked about we should always use react. So yes, there are places where react is used without question.
Also, we will use snowflake as a backend while indexing would make everything a lot faster and the budiness logic is done by 800+ line sql (stored procedure).
I ranted about this in another thread a few months ago and I stand by what I wrote: https://news.ycombinator.com/item?id=34857513