Irrelevant if you're getting an inherently noisier and softer image at higher ISOs.
And at higher ISOs, dynamic range tends to take a dive anyway.
Don't misunderstand me - I love MFT. I own both Olympus and Panasonic bodies, but I also know that they have their limitations.
For me, I don't really care too much about low light shooting. I'm not a cinematographer trying to shoot some dramatic movie in a car on a rainy night.
I also don't shoot sports, especially indoor sports.
My point was more to OP to temper expectations.
OP wants a cheap camera with the best IBIS and low light performance. The closest you get is the Panasonic S5, and plenty of people look at that thing's price and wince, because they don't know that ILCs cost that much.
They expect some "enthusiast camera" to be about the same price as their Chinese smartphone, without realising the significant compromises that smartphones make, and the ones cameras don't.