I think this is a controversial opinion, I think the usefulness of a premarket depends mainly on the token you're buying or selling, if you're buying a token that the community are planning to dump and sell upon listing a loss is almost inevitable but a token like an utility one with real potential is really worth buying on a pre market
I've bought on a premarket before and made very little profit but I didn't take any loss
pre market is I think just a part of marketing strategy, not necessarily guarantee that the price gonna be the same at price market, there's many factors you know that determine the price upon listing one of them is massive selling due to TGE, even aevo perpetual premarket adjust to the rate of various exchanges upon listing so its really not a foolproof way to determine what the price gonna be but instead a good rough guess that the coin probably will be priced around that price, i remember clearly with the case of NOT coin that is available in various pre market the price varies a lt causes people to have too much of expectation and only ended up disappointed once the people are dumping the coin but later on it went back up again anyway.
pre market could also work as a prediction to the price after TGE I guess since it will be more accurate that way, the selling pressure at TGE is massive sometime the price could dump 80% but later on it recovers, whales too know when to buy and when to sell so it does make a lot of sense.
but with the case of TKO i'm sure that the price won't be far off from pre market price anyway since the airdrops aren't that much also it divided into several phases, even the node runner are getting to claim late if i remember correctly maybe next phase of airdrop.