one of my friend holding XVG for a years and invested 1BTC in there,after holding it for a year he multipled it into 10BTC.
first of all that is purely luck of your friend. look at the chart of that coin! a dead altcoin for a couple of years which was worth 12 sat went down until reached 1 satoshi. suddenly this year literary every single altcoin was pumped and XVG was also pumped and your friend got his profit.
secondly as you can see on the charts it is a short term pump. so why keep altcoins for long term? you go in at the foot of the pump and get out at the top make the same profit but in a couple of weeks instead of couple of years.
well i think it is not a problem right to holding an altcoin for a long term?
i mean,as long as Bitcoin exist i believe altcoin will also exist,and because of that someday every altcoin will get pumped.
and it will always happen because of human greed.
they will not sit and do nothing when they know Bitcoin price will be huge in the days,months or years.
so,even if it's pure of luck(although i am not really agree with this) we still can minimize our loses by split it.
and when we are lucky enough ? we will get same amount of total our capital just for 1/10 from our capital.