C/J did double axels with their previous partners. But do they want to take a step backward like that.
Double axels used to be prevalent in Sr pairs, but they have since disappeared and virtually everyone in the upper echelon of pairs is attempting 2 SBS triple jump passes. This is why pair girls like Haven Denney and Tarah Kayne tried for years to get a second triple so that they could replace their 2A and move forward. It used to be that jump sequences were allowed in pairs, so a 2A-2A sequence was common for teams with only 1 triple. But once sequences weren't allowed anymore, 2As began to disappear.
Even if the point differential isn't that much, in terms of optics, having a 2A in your program these days is like flashing a neon sign that says "we are weaker jumpers". When everyone else is doing two triples, a 2A puts you behind and isn't as impressive. You might be able to backdoor your way into a good result and maybe C/J could sneak past Cain/LeDuc or something, but you'd have to rely on others messing up, and if you want to be taken more seriously, you try 2 triples. The pairs discipline has moved past 2A- it seems clear they want pairs trying triples and making mistakes instead of just doing 2A.
If you take a triple out, the chances of ever landing it again under the pressures and stresses of high level competition become far slimmer because now you're not even trying it. I remember C/J once doing a planned 2T-2T and 3S at a small competition, and they still botched the 3S. So I'm not sure how much taking out a triple helps their psyche or how they'd be perceived.