Gonna have to disagree there. This situation is unprecedented and the way the FPTP system works Reform don’t need a high proportion to get a majority, they just need everyone else to be doing poorly. And their lead is about 10% points ahead of Labour, or as high as 16% in some polls
This assumes no tactical voting though. A tactical voting campaign to ensure that they
don't get a majority could have a huge effect. People are wise to tactical voting now, and it was used against the relatively harmless Sunak. When you're talking of a party infinitely worse than Sunak could ever be, people are only going to engage even more enthusiastically.
A party on 28-30% will not necessarily win even if it's ahead of the others, if that party is hated by much of the population.
No-one else will win outright as things stand, of course, but we presumably end up with a coalition of some kind in which the other parties agree to work together.
I also wouldn't underestimate the Tories' ability for coming back from the dead. Perhaps Badenoch isn't well liked but doesn't mean another leader might not be. The Tories still seem to be popular in the countryside. If Wiltshire council results are at all typical of rural England, you could see them and the Lib Dems still with a lot of seats, even if Labour collapse.
Equally, I do see the real prospect of a new Left movement arising in the next 4 years. I don't think Corbyn is the right person to do this; a fresh face is needed, but I suspect a lot of people want to see a left-leaning movement for a force for real, positive, compassionate change. Look at the Left movement last July in France for example, which prevented the RN winning the snap election, confounding all the pundits who thought an RN win was inevitable.