On how we might preach the whole process to be, investing by lump summing isn't suitable for a beginner, how should he know at what price is comfortable to purchase, even a well knowledged investor might slightly enter from a wrong position which may hinder the progress of his profits.
Every strategy is well suitable for every beginners, so I wouldn't discriminate beginners in terms of utilizing the strategy, perhaps I think your advice should be that if beginners does not have an additional plan or having a good source of income that would easily backed them up if they Lump sum they should not go into it but if they have there is nothing wrong in adding more fraction to there investment portfolio while DCA is still there major target, we shouldn't feel or have the mindset that all the beginners are not financially stable because on the contrary there are so many rich people who chose to diversify there funds into Bitcoin so perhaps as they are doing there DCA whenever any opportunity come out for them to Lump sum they would always buy more.
I disagree with you that every strategy is suitable for a brand new investor because it means that you are encouraging new investors to wait for the dip when we all know that waiting for the dip is not ideal and improper way for a new investor to start his bitcoin journey with because he does not know when the dip will happen and he might end up not acquiring any bitcoin s the dip did not come.