Yes, and checking is a lot cheaper than replacing.One way to do brake fluid replacement on a rational basis is checking the moisture content, and base it on that. There is a tool for that.
But am curious what Kiwi said, and if there anything diff about EV brakes that would require more frequent fluid changes. I would have expected that EVs with their regen would need less replacement. My previous car, Prius, after 5 years and 95k kms had almost no wear brake pad wear. I never checked the fluid, but certainly the brakes had less wear and tear than a pure ICE car.