He's giving his opinion on the client. He's not engaging in a personal vendetta. People are allowed to criticize and share their opinions about whatever they want. Nobody is obligated to blow smoke, or sing Primal's praises if that's not how they feel.
Discussion
I didn’t see anything about the client, which is what I was trying to discuss. All I heard him say was something that occurred offline involving their team. That’s gossip and between him and them. If you can point out where he discussed the actual client then I’d appreciate it.