To diversify is also important but it depends on the way at which the diversification is taking place, some persons just have the mentality of diversify because they see others doing it without checking on themselves if they are fit to diversify, remember when you diversify you are protecting your initial investment from collapsing in future, the way you manage your investment matters a lot
As a new Bitcoin investor it is a wrong idea to reason diversification at your early stage of accumulation until you have gotten to a certain stage which you feel you can diversify, but if you are struggling to accumulate your portfolio, you are not doing well financially, it is adviceable not to diversify but keep accumulating until you can afford diversifying so that you don't end up losing both your already existing investment and your need investment.
Well I am not sure for others but for me I think investors especially new investors should focus on Bitcoin investment first and keep accumulating as much as they can because managing multiple investment requires a certain level of experience and financial stability. So before diversifying you should ensure that your investment goals are clear and won't be compromised. If it will be affected then it's better to prioritize accumulating more Bitcoin until you have achieved what you are set out to do or at least reach a certain level that won't be affect your goals.
No need to rush into diversifying, there is no deadline. You can always diversify when it's safer.
Yes what you said is truth because there are investors who are finding it difficult to build of there portfolio so talking about diversification when they are still struggling to have a good holding is not really a wise idea .In other for them to be able to position there bitcoin holdings in best position they focus on accumulating bitcoin and shun the idea of diversifying since they are limited by cash to do so . however there are investors despite being new into bitcoin investment but they have the financial muscle to diversify they can do so after 1 or 2 yrs of accumulating bitcoin or after one bitcoin cycle.