Why a small custom plugin often beats three more plugins

The usual path to a feature in WordPress is to install a plugin, then a second to adjust it, then a snippet to fix what the second one broke. Each addition brings settings pages, update cycles and code you did not ask for.

The hidden cost of general-purpose plugins

A plugin built to serve thousands of sites carries options for all of them. That means more code loaded on every page, more surface area for conflicts, and behaviour that changes when the author changes direction.

When a custom plugin is the lighter choice

If your requirement is narrow and specific, a small purpose-built plugin often runs to a couple of hundred lines. It does exactly one thing, loads only where needed, and cannot be broken by someone else's release schedule.

The trade-off

Custom code is your responsibility to maintain. That is fair when the code is small and documented, and a poor deal when you are rebuilding something the community already maintains well. The test is whether your requirement is genuinely unusual.