Venge, Ursa, Troll, Balanar, Barathrum, Na'ix, Razor, CM, Dazzle, Abbadon and Cyka are much more noob friendly than Tide, Clinkz, Luna, PA, DP, SS, Zeus and WD and fill the same roles.
???
Tide is literally 2 spells (+1 being his ulti) that you just spam, he's tanky af.
Clinkz I already said is not noob friendly.
Luna has 2 spells (1 being ulti), she's ranged, good ms and good nuke. Easy to play.
PA is one of the easiest cores - you could face-mash your keyboard and carry out your role without a problem.
DP I also said isn't noob friendly.
SS is like zeus but with 2x hexes.
zeus is literally sit back, kite, nuke, ulti - don't even have to direct your spells at a specific person for most spells.
WD has an op stun + op ulti - and has heals.
Venge requires knowledge of how armor reduction works, how to use her ulti and when - nice stun, but not noob friendly.
Troll needs knowledge of when to range and melee, decide when to use your spell depending on if you're chasing or tanking etc. His ulti is noob-friendly for sure.
NS needs to be ganker/initiator, need to know how to use silence (not only at night), when to use his stun (not only a nuke). But his ulti is noob-friendly.
Bara is noob friendly I agree.
Naix is noob friendly I agree.
Razor you need to know when to use your spells (both of them) otherwise you waste not getting dmg, or not causing enough dmg due to distance. I guess his ulti is noob friendly.
CM is noob friendly I agree.
Dazzle is totally not noob friendly - you need to be good with clutch heals (otherwise graves is a waste), you need to know when to poison etc. People usually go more aggressive picks when they see a healer pick, so a noob playing dazzle not knowing how to play it properly can fuck things up fast.
Abbadon is noob friendly I agree.
So unless the game changed significantly over the last 2 months (which it might have tbh), I don't see a problem with the Valve chosen noob heroes (other than dp, clinkz as I said originally).