Five seats might not sound like a big story, but that's because the FPTP system has delivered a very skewed result for Reform, and indeed a very skewed vote for the Lib Dems.
Reform is barely a fully formed party yet, and it's had the media on both the mainstream left and right gunning for it, and doing their damnedest to scare people off from voting Reform, yet it still got more votes in total than the Lib Dems with their 70 odd seats. You should not underestimate how significant that is. Pride comes before a fall and five years really isn't very long. Especially when you consider that Labour managed to win a landslide despite getting the lowest vote share of any winning party in modern history.
If I were in the Labour government I'd be not feeling too smug about how they got there. The end result very much reflects how people feel about the outgoing Tory and SNP governments, not how they feel about the incoming Labour one. This is no Tony Blair moment. Even Jeremy Corbyn managed more votes than Keir Starmer, and he was well and truly trounced, then laughed out of town. It's all about perspective and the wider picture.
Labour should be very mindful of that. They've got an awful lot to do if they are to win the cynics round, and if they screw up or fail to deliver on their promises they will be exposed very quickly. A few key bi-elections is all it will take to increase Reform's presence.
Plus, you can expect to see Kemi Badenoch heading up the Tory party very soon and that will be a total game changer.