That sounds like something an anti-vaxxer would say; haha just kidding

If people use a specific strategy to 'find their meaning', and they're aware whether or not they've found it, then we can get some idea of the efficacy of the strategy over say, doing nothing specific.

Is it necessary? No, but there are lots of strategies to choose from, and some will likely be more effective than others. Life is short, and I have finite time and energy to dedicate to 'finding my meaning'. I'd prefer to know ahead of time if a strategy is likely to work for me.