Quite a lame answer ....
where is the definition of "scam coin"?
If Devs cashed out, then Why in the NEM rich list (
https://nemnodes.org/richlist/) still exist Devs (Jaguar, gimre, Alice) with the same XEM amounts as since 2015 ?
The one exact math, which is every time forgotten, is the fact that when someone sells, then also someone buys.
According to the distribution list changes the big owners have not sold. Of course some of them have sold, but in the big picture they have not sold, because the Top100 has increased their ownings from 57 % to 71 %.
Distribution Fri, 05 Jan 2018 18:33:44 UTC:
Top Accounts XEM Percentage
Top 50 4,804,818,406.12 53.4%
Top 100 5,119,481,371.59 56.9%
Top 200 5,455,792,305.26 60.6%
Top 250 5,609,101,108.18 62.3%
Top 500 6,365,621,548.69 70.7%
All 8,999,999,999 100%
Distribution Fri, 12 Mar 2021 05:39:36 UTC:
Top Accounts XEM Percentage
Top 50 6,166,236,694.24 68.5%
Top 100 6,423,452,170.92 71.4%
Top 200 6,739,353,256.10 74.9%
Top 250 6,890,203,307.06 76.6%
Top 500 7,543,466,571.50 83.8%
All 8,999,999,999 100%
That may be mainly caused by the exchanges' accounts (people have moved their XEMs there...), but still: the Top100 individual owners have not sold much of their ownings. Now can easily be detected only 3 names whose accounts have been "emptied": mixmaster, bogdana and rockethead.
There may be different reasons: transferred to 3 MXEM nodes to harvest, or to exchanges to trade. Or to exchanges to ensure the XYM airdrop instead of "not-so-working-XYM-wallet-in-own-computer". Or to exchanges to sell some to cover the expenses of life. The last is the reason for some, no need for examples ...
Tell yourself whatever makes you sleep at night. The only fact is: A coin that drops over 60% in price during a bull market
a PnD scheme. I've been around long enough to recognize that.