IMO a lens being easy to carry is meaningless if I don't like the way it renders photos.
Well, that may be true for your shooting preferences, but it isn't for others. And to be clear, there's nothing wrong with how this lens "renders photos", you just might have to make compromises in settings to get the IQ you want, such as shooting at f/4 instead of f/2.8, which may bump up the ISO and definitely changes the background blur, etc. But a lot of field photographers are stopping down to f/8 anyway, at which point there is very little if any IQ difference, but they still have the size, weight, and cost benefits with the f/1.8 lens. If none of those things matter or represent your needs, then there's no reason for you to get this lens; get the incomparable f/1.2 instead.