Imho I'm currently on the Webpack wagon and I'm not going to switch anytime soon.
One of the reasons is as you said tooling fatigue, it's a pita to switch around technologies, especially when you have legacy code to configure.
Another reason for sticking to webpack is that, when you're trying to get 10+ projects under the same tooling system, it's way more flexible on deciding from where and what you want to bundle, minify, extract etc.
Also it's used as the base create-react-app and vue-cli and angular's so onboarding new hires or starting new projects keeps you in the same ecosystem.
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