If this investment is for the long run, then he should stay for now given that the projects are going to have some updates and constant development in the future. Because if it's not, then he is just wasting his time and money keeping those coins because it might have a low chance to increase once the bull runs will come. He needs to consider migrating some of those that do not have some assurance to change their price positively. looks like it will be a long bearish trend for us since nothing has happened even in the midst of December this year. let's just hope next year will be a turn of the table for the crypto market.