Is the 4.0L really that bad?

I’m looking at a 2008 Fx4 with a v6, 4.0L engine. To my knowledge it is a sohc engine. This will be my first truck and I do not plan for it to be an everyday vehicle. Dealer is asking 5k for 150k miles (also not sure if that’s a good deal). Per dealer, carfax is clean and frame is “good”.

I’ve heard those engines are a pain when it comes to timing chain issues. I’m not super knowledgeable about vehicles, so should this be enough to persuade me against pursuing this truck?

Thanks in advance