locked funds mean something like this: When there is a high demand on thing X and it's not available, the price on thing X increases.
I don't think it's as simple as that in reality. If you look at the FUN token price you'll see it didn't change since the beginning of this offer and is still at 49 satoshis. Usually this kind of investment is offered more to create a craze and to attract new investors than to deter previous ones from selling them.
Maybe it is too early to see the effect of this offering. Let us see maybe a week or two if there will be change in its value. But if nothing else, it is up to you if you will put your fun tokens to locked savings. There is flexible savings option so you can redeem your savings anytime you want if you don't want your tokens to be locked at a specified period of time. But you also need to check the time frame of redeeming the flexible savings.