It’s a fools erand to disregard automated tooling that could benefit in API discovery, type checking, linting, code analysis, spelling, navigation, auditing, etc. which are now manual remedial tasks common in day to day development you have to do yourself and the later you catch any of these issues the more time you will have wasted.

You now have to leave your context and “break the zone” you’re in to find the symbol name you want you use elsewhere, you’re at the very least less productive as a result.

I’d also expect code quality to suffer, given the number of issues I’ve found thanks to code analysis, type checking, linting and spelling that we’re able to highlight, catch and resolve human errors before shipping.