I was told by the dealership that i need to replace my timing chain because i was rough on a small 2.0L engine....
This can after having infotainment unit issues for about a year and after all warning lights lit up on the dash recently.

Wondering if anyone else had the same diagnosis?

Seems weird since the timing chain was supposed to last a lifetime

 

^

1) How many miles on the 2021 RDX?
2) Did you have consistent regular maintenance performed?
3) Were you rough on the small 2.0L engine?

 

Only 100K on it. Maintained regularly. I drive fast but i never took the damn thing to the track...

 

Regardless of the alleged 'lifetime' timing chain duration & the admission of being rough on the 2.0L engine, it appears you obtained reasonable utility from a four cylinder trying to pull around the weight of a 3,783 to 4,068 pound vehicle, (depending on trim level).
Pay the piper & carry on or upgrade to more displacement to suit your preferred driving style?

 

Its a first one with timing chain issues, frequent oil changes help with timing chain wear.