Hal 9000 said:
I’m hesitant to remove the Finn having something to say thing because it’s a good chunk of what implies he’s Force sensitive. I already used poppasketti’s Rey voiceover in TLJ to tie into this even. And I find it awkward to cut out the reference to this in the sandy underworld.

I’d argue that him having this “secret” for Rey doesn’t really hurt or help the implication that he’s Force sensitive. I certainly didn’t connect the dots when I saw it in the theater, and all the other hints are still there regardless of what you do with the secret. If I have free time later I might try to mock up how I would remove it.