Like with many things, it actually quite hard to buy a bad camera now.
But one of the main points of mirrorless is the overall size of the package, and until Canon invest properly in sensible size EOS M series glass then it's not the camera system of choice, 4 dedicated zooms and two primes is all they offer now, and yes you can connect any EF lens with an adapter, once you've done that the size of the package says you might as well have bought a DSLR anyway.
They need to be investing in a range of decent mirrorless size glass, and not worrying about the latest body tech.