Not true at all.
I extremely struggled with his changes and I even thought they killed my fav hero for good… but after a few games it clicked and he feels even better than before
Fact is: Invoker is even less dependent on items and you can build for any situation from the start ( I usually get 1 or 2 Bracers, wand + boots and than straight Midas)
% Heal bonus from Quas really helps in lane, level 4 Exort gives me enough spell amp for Sunstrike to nuke side lane supports with half hp.
They orb chances also scale better into late game since most of them are % based.
(Ancient 2 scrub, 90% I play Q+E )
Dota 2