Why do teams swap the same two agents on players

For example in the talon dfm game rn, on the lotus ban was on cypher and surf was on breach but now on sunset ban is on breach and surf is on cypher. Doesn’t it make more sense to have more set roles and agents?

Think of it like distributing the load evenly, like cypher is much more intensive to learn than breach, so its easier to distribute that workload over 2 players than to have 1 player have to learn setups for 2 maps

thats my theory tho

no idea, ban was playing Cypher on Sunset before

maybe there's a reason, maybe it's just vibes