What about those people that has full understanding about there finance and also has a discretionary income. the knowledge of Bitcoin is different from that of finance, you can be a beginner (newbie) but have all knowledge about financial management.
So if such person's are going into Bitcoin investment all they need to know is how to invest and how Bitcoin works.
I agree with you and I believe having knowledge of self custody is very important and yet knowledge of self-custody is not a prerequisite in terms of getting into bitcoin you are very correct.
While I agree to you in most of what you've said but learning how to invest in Bitcoin isn't just all about how to invest and how Bitcoin works. There's so much they need to learn but I don't want to complicate it because they'd come by to that once they're already in. Like how to protect themselves from potential scams and phishing, so knowing the volatility of Bitcoin which is included on how BTC works but all of those will be learned by the newbies once they have allotted money on BTC already.
A lot of people has good knowledge of financial strength and management and also good knowledge in Bitcoin and all they need is a good strategy on how to start and I believe too much in strategy will make beginners confused in carrying out their investment except they are very much articulate.
IMHO, there is no need for so much strategy before someone invests in BTC. Having the basic and common knowledge is enough to start but even if they have a background in finance, BTC is totally different from what they used to see but that's a good start if they have it because they're already well versed with taking risk.