Actually yes.
A wider tyre has more contact surface.
No, it doesn't. Do the research. Look it up. With an open mind.
And how does a person get only 20k km out of a set of tekkies?
Read the post - I easily got 60 000km of a set once I changed size. Always got 60 000km of the fronts which were the narrower tyres. Wider tyres are softer compound. Again, do the research, read some articles, (by experts, not just some guy on the internet).
Any decent wides will evacuate water just as well as the narrow options. Its about tread pattern not width.
It's about both tread pattern and width. But the wider the tyre, the more work it has to do to remove the water, and the more critical the weight and tread depth. You'll be aquaplaning on a wider tyre (especially in a light car) long before you hit the legal minimum tread depth.