Yeah, these bad ideas need more calling out.
In 2004 Joseph Lisiewski published book with a cool cover but which was literally called 'Ceremonial Magic & The Power of Evocation', and basically made a fetish out of full visible evocation, saying unless you have full visible manifestation, you would lose control and BAD STUFF would boomerang on you.
It put off many people from diving into the grimoires for many years! (We know now from reading Stavish the dude had really serious and unresolved anger issues - so OF COURSE he got the angriest and most hostile manifestations.)
Too much fetishism. And it goes both ways.
The famous oracles of the Temple of Delphi used a pendulum hung from a tripod of hazel over a bowl and to communicate using simple divination. Now everyone makes a fetish of mental communication.
So of course the counter reaction to Lisiewski has been to make a fetish of mental trance channeling. All good, but sometimes it smears into the same missionary zeal as Lisiewski's.
To me it look like all the of these useful practices that have all be historically employed by service magicians and Cunning folk (thanks to Dr. Al. Cummins for that history) have now been sliced off from each other, compartmentalized , and are being sold as the One True Technique. It ALL works, so just get moving, I say. But it does not all work the same.
I will vouch for the practice of evocation as a personal marker of you own mythic engagement.
It is not required for "slow sorcery' , but I can tell when my personal ego and "small mind"personality are still over-involved, and giving me stereotypical manifestations. The more you go into the mythic journey the more Other they become, and the more extreme the experience becomes and 'fast sorcery' becomes more possible. But also not necessary.
What's the rush? Unless its a real emergency, slower sorcery is probably better in most cases. The faster it is the more is can be a bit wild and chaotic as reality breaks.The classic Hoodoo timeline is a good rule of thumb. Just have patience. (I remind myself. I have a very direct and punchy Cardinal sign on my Ascendant. Go! Go! Go!)