Is it true that half your deck should be hand traps now?

Not a new player. I’m a returning player. I played with the game first came out up until GX. Came back when Zoodiacs came out and now I’m back again. I built a deck recently and I put about 8 hand trap monsters. I’ve seen videos and folks are saying you should have 13 or more hand traps. Is that really how the format is now? Do you need those hand traps to survive going second?