I dont see any problem here. Even more, it is a must for a game to have these kind of cards/decks.
The parent of HS - paper MtG has it, and it is very good that we have to not only go face on curve.
Rich diversity is exellent.
I don't think that MTG has cards making cards (I played that last time around 5 years ago). I agree with the OP cards making extra cards are cancer of this game. Omega Assembly / dr. Boom / Mana Cyclone / Elysiana and much more shouln't exists. You should have 30 cards in deck and thats it. There can be RNG in the game (drawing will be random always), also random rolls on Knife Juggler and such things are OK. Discovering next removal when you need it is not fun.
HS has developed many of these types of cards at this stage of the game, to the point that you'd have to essentially overhaul/delete a dozen, or more, cards. That isn't going to happen. If the complaint is that these kinds of cards shouldn't exist then I think for these types of players they should move on to a game that they prefer more. The mechanic may dip or rise in design popularity, and receive nerfs from time to time, but it has been introduced to the game and isn't going anywhere. You'd have to feel quite optimistic to hope to craft any realistic argument debating otherwise.