I 100% agree with this. It has been a huge point of discussion for us here internally. "Developer efficiently with language x." Ultimately, language performance does matter but there are ways to make up for less performant languages. If it takes you 2x as long to get something out the door though, then that is a huge problem.
Just use the language and framework you are most efficient in and enjoy using. Worry about framework performance when you notice server load increasing over time.
Sure... as long as you have the migration and rewrite plan done and ready to go, and have engineered the product for that rewrite. Otherwise you're gonna be wishing you'd failed rather than succeeded.
Just use the language and framework you are most efficient in and enjoy using. Worry about framework performance when you notice server load increasing over time.