To me that's a bad advice you gave so. When you sell your Bitcoins when the time for substantial withdrawal has not been reached or there aren't any genuine reasons that are so important then selling is wrong even if you have a large portfolio or small one. For those who sell their Bitcoin because they have made some profits from it and then change it into fiat just to hold it in their local bank account that is the dumbest thing to do. It's different when an investor has urgent bills, like tuition fees, sending his children to higher education, fixing the roof of the house if it gets bad and so many others the withdrawal will be reasonable enough to understand.

However, it is not in our hands to decide if an investor should sell or not. Every investor has the right to make decisions in his investment but is indebted to make the right choice. I do dispute the fact that people have different financial situations and incentives to buying Bitcoin and holding. There will always be consequences of our actions whether positive or negative we are not immune to them. One way or another we will speak about the decision we made. To sell or never sell yet.