No sir, I'll stick to my original answer, thank you!
The title of the forum just so happens to be "8.4 Uconnect 4 System (2019-2021)". Paying special attention to the #4 and also the date being up until 2021.
That's a great great article in your link. Fun little read. However, that is for the Uconnect 5 released in 2021. Not the QNX based Uconnect 4 this forum is discussing.
I'll go ahead and admit I was partially wrong in which I said "All Stellantis Vehicles use QNX.". This was incorrect as for the Uconnect 5 system. However, that's where that will end as they are infact transitioning BACK to QNX again.
I'll take the hit on Uconnect 5, despite not being topic of conversation. However, for the relevant stereos and future Uconnect systems, I'm dead accurate with QNX.