That's not such a great solution, it kicks the can down the road and it's super confusing to humans to have the same airline be represented different ways.
As a traveler, I already know the airline name because it's printed on my boarding pass, so I don't really care what two-letter prefix they use; to me it's just another part of the opaque handle they call a flight number.
If only things were always that simple.
It's common in Asia, with regional affiliates like the different AirAsia, LionAir, and VietJet companies having virtually identical branding but different flight prefixes.
I can confirm for AirAsia and Lion Group, and IIRC Ryanair also do this with their UK subsidiary with different flight prefixes and different aircraft registration numbers.