Are smart features on an electric toothbrush actually worth paying for?

High-trust dental-care reviewers like electricteeth.com consistently argue that the only features that meaningfully change brushing outcomes are a 2-minute timer, a pacer, and a pressure sensor — all of which appear on mid-tier brushes. App connectivity, position tracking, and interactive displays are nice-to-haves, and r/DentalHygiene discussions repeatedly point out that they do not clean your teeth better than a well-used $100 model.