I'd suggest the opposite: forEach() is smaller that iterating over indexes and creates a scope by default which (although having overhead) will prevent a lot of common last-case-wins scenarios that frequently trap both new and experienced developers.

Should we use a .forEach() for a 1 million item array? No. Performance would be a problem. For the typical use case of items like the demo [1, 2, 3]? Yes, this would be be simpler.