British PM Starmer: finished or rescued?

In a Facebook post, journalist Carina Cockrell-Ferre sees the end of the two-party system approaching:

“The overall picture is one of increasing fragmentation in British politics. On the right, Reform UK is actively drawing protest voters away from Labour and the Conservatives; Plaid Cymru [Party of Wales] and the SNP [Scottish National Party] are expanding their influence in the national regions, and the Greens and Liberal Democrats continue to gain ground on the left and in the centre. The traditional big parties – Labour and the Conservatives – are gradually losing their monopoly on power. … Britain is entering a new political era in which the familiar two-party system will soon be a thing of the past.”