Unlikely, the people who dislike The 1975 are so entrenched in their viewpoint I suspect the majority wouldn't even admit it if the band did impress them. They've become the "cool to hate" band of the 2010s, as this forum so often proves.
In honesty, if you're not really into either it might not be as great a "turn on" for many as you'd expect. I dont mind the 1975 but wont be watching and i love the two O'Rod albums but cant see much of the "older generation" getting too excited
I personally think that if people come in with no preconception - O'Rod will win over more neutral viewers. Her performances and songs are top level.