Is an older year Lexus a dealbreaker?

I’m going to look at a cleannn 2016 IS300 this weekend. It’s got 50k miles and it’s selling for around 20k. This is the average price for IS’s around me with <60k mi. 20k is what I can comfortably afford. I’m gonna take a local mechanic with me to inspect it before purchase. The salesman has no problem with me doing that.

My friends/coworkers are telling me that I would be dumb to spend 20k on a 9 year old car and to spend another 10-15k over my budget on a newer car. Meanwhile they’re driving $30k-35k Camrys and civics and paying $500-600 a month with 60-72 months loans lol I’m all set. What do you guys think? Am I making the right choice here?