Yes it is true. Ubuntu parasites Debian and others and does not contribute. For ubuntu idiots I claim, that contribution in rate 0.1% is no contribution. I would accept that from distribution with 0.1% of the users. Not from "most used" distribution (as you claimed many times).
And don't tell me those bullshit about Gnome and KDE. You did not brought any example except some obscure GUI utilities nobody accept outside Ubuntu.So bring me some numbers, kid. Until you show some remarkable contribution (and It would be so easy if Canonical contribute so much

) above the level of insignificant amount, you can just shut up and be happy, that Debian does its work so great, that you can use it's parasite.