Shame to see Arduino go, but honestly how relevant are they anymore? The Arduino framework is one of the worst ways possible to write firmware for any slightly serious use, and their hardware is... quaint in the era of Espressif and the Cambrian explosion of devboards with any number of highly advanced features.
Arduino was a great way to get into microcontrollers back when the only alternative was vendors' native libraries in straight undocumented C and wiggling CPU registers manually. But that's not really a niche anymore, there's plenty of other, better designed, frameworks and libraries. Arduino has always been the worst, slowest framework available.
Honestly it's high time to replace Arduino with something else that doesn't instill such awful habits in new engineers.
Arduino was a great way to get into microcontrollers back when the only alternative was vendors' native libraries in straight undocumented C and wiggling CPU registers manually. But that's not really a niche anymore, there's plenty of other, better designed, frameworks and libraries. Arduino has always been the worst, slowest framework available.
Honestly it's high time to replace Arduino with something else that doesn't instill such awful habits in new engineers.