Can you replace the keyboard of a MacBook Pro without replacing the logic board?

I had a bit of water damage on my MacBook Pro. I took it to the IT department, and he got the computer to work. The logic board and hard drive were intact. Here's the issues I'm having: the keyboard is next to destroyed. The buttons barely respond, and when they do, it's random letters that type, and they type without me pressing anything. I asked him about replacing the keyboard and what that may cost me. He told me that replacing the keyboard would mean replacing the logic board because they're integrated together, so essentially, that would mean replacing the entire laptop itself. I've been looking on here, and have seen that people offered other uninformed customers to go look for replacement costs for the keyboard, leading me to believe that it is replaceable without replacing the logic board. Can anyone confirm or deny this claim? I would greatly appreciate it. I gave the laptop to the IT department for the weekend. He's going to dry and dry it out over the next few days, so hopefully that works. I don't know what generation macbook this is, but I got it brand new in early October. Thank you very much in advance.