IVF and things like caesarians & other prenatal care are surely having an evolutionary effect. Fertility and ability to give healthy live birth used to be the most fundamentally important evolutionary pressures for us (and basically every other species), and now we can opt out of them.

IDK how long we'd expect it to take for most of humanity to become dependent on a high-tech society to reproduce, under those circumstances, but it'd seem really weird to me if that's not the direction we're going. But maybe that takes hundreds or thousands of years to have a pronounced effect, rather than tens.