It is absolutely true! Sometimes it is good to hodl if you believe in a project but for a lot of them it is smart to dump em when they have any actual value.
It is a two headed coin tho sometimes a coin can go up. but you can rest assured that most go down down down!
Yes. I learned this well with the SPS. I remember when it was around $0.90 USD. I had more than 200 SPS in that time, so I could have been sold it for around $200 USD, but I did not. Nowadays the SPS is around $0.10 USD, and nowadays I have around 530 SPS, so based on the current value, I could sell it for around $53 USD. Of course at first I would need to unstake it first. I am still staking all of my SPS. I hope that the value of the SPS will increase after the end of the SPS airdrop.
I think in that case it will go up after the airdrop. When the 'free money' drop ends there is no longer that onslaught of selling. Besides, Splinterlands is different, it has a real life product. I think it will go far. Well, I am saying that because I have a stake too!