The first two generations of the Pi only had a single HDMI output - later generations have 2 and hence required smaller HDMI ports to be able to keep the Pi footprint.
The Fuchsia team is working on a Linux compatibility-layer, named Starnix[1], which is much like WINE on Linux. This would allow Linux applications to run on Fuchsia as-if they were running on a Linux kernel. A massive amount of work, but less work than adapting every single existing application to run on Fuchsia.
Back in 2022, there were signs[2] that Google was working on testing the Android Runtime (ART) on top of Starnix, by trying to get the clock app running on top of it. Most of this work has been done in private though, the tracking-issues mentioned in the article were quickly set to private after they were found.
A few years ago I reverse engineered my Oral-B (Braun) toothbrush in order to change the color of the brush (handle) to one of my liking, without being constrained by the pre-set colors available in smartphone app. (Which I think now also requires you to log in)