no it really isnt. the value of crypto as it relates to FIAT is in trading volume over time, and it does not mean anyone needs to be a fool left holding the bag unless the trading volume decreases and doesnt return.
I want to buy something and use BTC as a medium for exchange. I take $10,000, buy BTC, send BTC to the seller, the seller takes the BTC and exchanges it for $10,000
However, we are not the only buyers and sellers and it takes time for the transfer to go through. So you have a variable amount of $ being held against the fixed amount of BTC, albeit with a variable amount available for purchase.
so i buy some BTC to make my trade, the amount of BTC decreases, the cost to buy more goes up. another person buys for the same reason. they spend more $ per BTC, but it doesnt matter - the value of what they are buying is the same so they buy less BTC. this happens for many people all concurrently.
the seller receives my BTC and then one of two things happens.. if trading volume has increased since i sent it to them then the BTC is more valuable and they make extra money. or if the trading volume has decreased since i sent it to them then the make a little bit less money.
there is a minor gaming of the system that happens with people trying to buy while trading volume is on the rise and then sell back while trading volume starts to decrease. this is why it looks like an MLM / scam - because this obviously doesnt scale, it isnt objectively valuable to increase competition for the resource while its needed to then try to release all that was purchased back into the trading pool while no one needs it. It is just a situation that is gameable in small doses if only a few actors do it.
People buying BTC for no reason other than to sell it back creates a gap in value on the other side for the sellers who need to sell the BTC they received in exchange for goods they valued at a specific $ value. The burden will be distributed across all the late sellers as trading volume decreases.
However, they dont need to sell the BTC if they would take a loss. They could just hold it until trading volume goes back up again, assuming trading volume is just fluctuating with standard customer behavior and not a change in belief of the stability of the currency.
Ultimately, the burden only really needs to be felt by those people who are buying the coin near its peaks who are trying to flip it and then missing their sell window. Actual vendors have wiggle room, as they only lose their COGS - even though they have their Revenue tied up in BTC, so they are still making profit if they sell, just a little bit less. the traders trying to game the system short term, however, are the ones who have more at risk as they have bought the BTC with after-tax liquid funds and need to sell it at enough of a higher price so that they make more profit after transaction fees as compared to alternative investments. As the price of BTC drops, they are the ones who are forced to sell at a minor loss and move the funds to other investments they believe are gaining value to avoid keeping the value tied up beyond their investment window waiting for the price to come back up.
The value proposition for holding BTC long term is basically a claim that the use of digital currency as an exchange of value will be so much more common in the future and BTC will be used for it, such that even times of "low trading volume" then will make current all time highs (in active trading volume) look tiny, even when accounting for the increase in tradable BTC that will come with all the BTC not currently in circulation do to people holding and waiting for that time to come.
So the traders rug pulling each other is kind of just a subplot going on with crypto and completely avoidable while still investing in crypto.