The question is do we expect beginners to make ANY adjustment easily? Seems more productive to show them the flaws in technique to help enhance their long term knowledge and skill, rather have them go buy a head/tip because you think it'll make their problems go away.
We did say the same words in different ways and am by no means attempting to argue or discredit you, but to be honest its confusing as to why a guide wouldn't want to help a beginner change their technique, rather than have them go buy a set up to accommodate their poor technique. If were using terrible examples, is having someone go out and buy a new bike, little taller/shorter and a bit heavier/lighter, are they going to all of the sudden be able to ride a bike because of these subtle changes? Absolutely not, and the same goes for casting, unless the set up is 3+ feet to long or short and 50+ grains to heavy or light, the best solution would be to change the technique not the "bike" wouldn't it?
To teach a beginner that no adjustments are made in Sustained anchor casting, but a change of the line and off you go... is false advertisement. Adjustments are made constantly with in sustained anchor casting via wind/current/whats behind you. Seems offering a little adjustment to their technique makes the most long term sense rather then tell them to keep the same casting stroke but change the head and suddenly the sky goes purple to blue and all their worries go away.
To quote a lawyer, you're assuming "facts not in evidence." No where did I talk about not teaching people to manage their tackle.
We don't start beginners off with a hard to cast rig to teach them adjustments. We start them off with an easy to cast rig so they can first learn how to cast. Adjustment learning only comes after the basic casting has been mastered.
Learning to Spey cast is tough enough without the student having to fight the tackle as well.
Your assumption is a classic mistake that friends make when teaching other friends to Spey cast. They supply the friend a setup that suits them and then overwhelm the friend with "when we're using this, do that" and "if we're in that situation, do this". The onslaught of extraneous info makes it impossible for the learner to figure out anything. Teaching isn't about throwing masses of information at the student to show them what smart instructors we are.
However, the real point of this post was to discuss the issue of matching sinktips to head weight. Within reason, I can cast pretty well anything, but I don't like spending all day on the river with a rig that's fiddly to cast. It ruins the joy of the day and I'm spending all of my mental energies on the casting rather than the fishing.
People show up on the river with heavy tips attached to light heads and struggle. Yes they can "adjust" and fight the problem all day, but why should they? Why not match the head and sinktip properly so the casting becomes easy?